Game devs have learned a lot since the PS2 era. The remastered games won't just look better, they will feel and play better too. The trailer for the collection and screenshots comparing it to the original games look pretty great too - although it does seem some people still aren't happy with how good Liberty City is going to look in 2021.
Better yet, it will be releasing the games as a collection on multiple platforms before the end of 2021. Rockstar has remastered GTA 3, Vice City, and San Andreas.