RE4 is completely overrated, in my opinion. I understand that using the same elements can get stale, but as you know, I feel like RE4 was when Capcom shifted away from the scary tone of the entries before. It just feels too much like an action game at heart. However, RE4 is by no means an awful game. People just like it for reasons not really related to RE as a whole.
RE4 definitely favours action. That isn't to say RE4 is not scary in some sections. I dare anyone to say the castle wasn't scary, or the factory with the Regenerators. Although to me, a lot of what made RE special in prior years got evaporated with the stunts, the merchant, and the addition of things like co-op.
But RE5 isn't scary whatsoever. I do agree that RE6 is hated on considerably, and it is unfair, as I felt that was more in keeping with RE than 4 or 5 ever were. Seeing as how their storylines concern farmers and tribes, rather than the undead, RE6 was more like RE2 and 3. Being that RE6 had zombies and Umbrella was the focal point again, I like it for that reason.
And at least Chris looked like Chris. That redesign he got later on in 7 was so lame. I don't think they've done a bad job with Jill or Claire in recent RE media, though, or even Leon. His soy boy look aside, he ain't too bad. You can at least tell it's Leon.
But the original RE2 still beats the remake by miles. There was just a lot to moan about with the remakes of 2 and 3, because they ended up cutting a lot of enemy types and making it more woke.