I fall into the “room for both” category.
A good remaster maintains the gameplay and art style with some QOL updates - a bad remaster changes core mechanics (similar to how Dawn of Souls replaced the unique Final Fantasy MP system with a boring ass generic mp system, it not only ruined a lot of the flavour of the game, but broke the balance. On top of that, Dawn of Souls changed the art style.
Remakes are more like an adaptation of an old game into a new game, sometimes even changing the genre entirely, but maintaining story and characters, locations and such. I think there’s a big place for this as well. These can be done right and wrong. I don’t think there’s a wrong way to do this kind, but I find that if they’re too close to the source material, I’d probably prefer a remaster than a game that feels like a perversion of the original experience: for example, Sword of Mana as a remake of Mystic Quest - it followed the same structure, but made bigger maps and a bigger story, but in the end it felt extremely bloated—the original was sharper and more effective. Super Castlevania though, now that was a fantastic remake of the first game.