Some of them are better than the original forms tbh. Flutter Mane, Sandy Shocks, Roaring Moon, Iron Bundle, and Brute Bonnet are really good, and most past paradoxes and some future paradoxes are still decent.I hate these future and ancient Pokemon so much. They all look terrible. I'm really hoping the next generation will be better than S&V. Have not been a fan of really any set outside of 151.
Sometimes I feel like you're not aware of your biases and don't realize that it's a human neural reflex to prefer what we know well. Try to put your biases aside and you'll realize that the new Pokémon are cool too, maybe not as much as the old ones, but if we start with an open mind, we'll end up realizing that we like the new Pokémon as much as the old ones!