My problem with first-person in Resident Evil is simply that it doesn't feel like Resident Evil. You can be doing the same exact things as in any other Resident Evil game but it will always feel different because it's in first-person which completely alters the overall experience which is why genres always differentiate between camera perspectives.
I love first-person games, I have nothing against them. Halo is one of my all time favorite franchises and I can always enjoy a good first-person shooter. I even enjoyed Resident Evil 7 and 8, but I just wish they weren't Resident Evil games.
Resident Evil has such a distinct gameplay that makes it feel like Resident Evil and not something like Silent Hill or Dead Space and the way it has evolved through the years was very consistent with the exception of Resident Evil 6, but then RE7 came along and just completely ditched the very identity of the franchise after Revelations 2 tried to get it back on track.
I never understood the complaints about tank controls during the fixed camera era and nothing has solidified my appreciation for them more than the HD Remaster of REmake which allows for "traditional" controls which are just absolutely wonky as hell. Having to stop and readjust your movement with every camera change is so abysmal which only proves to me that the tank style gameplay was essential at the time and the only reason why the games are still remembered fondly today.
First-person would have been terrible on the PS1 back in 1996, like it was once conceptualized, which is an argument people always love to make when defending RE7's first-person perspective. Third-person shooters and action games weren't exactly setting the world on fire either for anyone to think that they could have done anything but fixed cameras and the control scheme was absolutely perfect for navigating within those limitations.
As much as I love the fixed camera angles and find them to be a lost art, I can admit they were simply a means to an end due to hardware limitations, which is why I'll never advocate for them to return in any significant capacity. The over the shoulder perspective was by far the best choice to move the series forward and it wasn't quite the departure most people made it out to be or still try to make it seem when defending the change to first-person.
Resident Evil 4's control scheme, animations, movement, momentum, stop and aim combat, etc. This was all carried over from REmake and is what made Resident Evil 4 feel like you were still playing a game in the Resident Evil series despite improvements and additions like free-aim and a dedicated knife button as well as the many context sensitive button prompts such as melee and cover.
Over the shoulder simply gave the player more control over the character without ditching its core gameplay identity. The only problem however is that people seem to associate Resident Evil 4 with its linear level design and combat oriented progression that they believe the gameplay itself was somehow altered from previous entries, even though people would go on to complain that Resident Evil 5 didn't let you move and shoot, which again, misses the whole point of Resident Evil.
Revelations would go on to cleverly address this complaint with its enemy design forcing the player to move backwards while shooting to increase tension rather than moving forward and guns blazing it, which is something the series has continued since and improved upon.
Despite RE4 and RE5 being more action oriented games, they're still not exactly shooters and do abide by specific survival horror conventions which is why a game like Resident Evil 2 REmake and to a lesser degree, the Revelations series can be considered a return to the series' roots despite all playing nearly identical to games like Resident Evil 4 and 5.
First-person on the other hand is just a whole different ballpark. If people can recognize the differences between playing a shooter in first-person vs third-person, then I don't understand why this fandom sometimes acts like it's not a big deal because "you're doing the same stuff." If Mario fans can get uptight about a game like Mario Sunshine feeling too slippery and Halo fans can b*tch about Halo 2's physics being different from Halo 1's and both have those things be remedied in later installments, then I don't see why Resident Evil should be any less sacred.
I know back when Resident Evil 6 came out, people did complain about how loose and weightless the characters felt because this series has always been known fot its heavier more grounded feeling characters which Capcom did fix with Revelations 2, yet they made RE7 first-person anyway...
Over the shoulder not only carries the same spirit as the fixed camera games, it opens the series up for so many new opportunities that can further enhance and evolve what was already established in ways that first-person just can't. Sure, first-person can still be scary but scary and horror are very general concepts that can be represented in any number of ways while Resident Evil will always be distinctly Resident Evil, as is anything else with an identity. Unfortunately, Resident Evil just so happens to be having an identity crisis with just about every release.