It makes the game definitively worse.
Mafia III issues on PS4 Pro after update? : r/MafiaTheGame
Mafia III Definitive Edition Patch Removes PlayStation 4 Pro and Xbox One X Enhanced Graphics - Niche Gamer
Mafia III (for PC) Review
tHe rEmAsTer LoOkS WoRsT : r/MafiaTheGame
If You Bought These Shows on the PlayStation Store, They'll Be Deleted Soon
Mafia 3 Definitive Edition update removed Xbox One X and PS4 Pro upgrades
Mafia III Xbox One X enhancements return with latest patch
Mafia 3 Definitive Edition update removed Xbox One X and PS4 Pro upgrades
The Big PS4 Pro Analysis Post
Mafia III: Definitive Edition somehow forgot to support PS4 Pro and Xbox One X enhancements – Destructoid