blinded by nostalgia

Blinded by nostalgia aka nostalgia-blinded is some sort of a syndrome where people (especially gamers) are desperately in need of help.

Quandale Dingleberry: I miss the old Clash Royale, Jaquavious Android Junior the 3rd!
Jaquavious Android Junior the 3rd: Nah, the new update is so much better.
Quandale Dingleberry: Cap
Jaquavious Android Junior the 3rd: You are totally blinded by nostalgia!!

Blinded by Nostalgia

Blinded by nostalgia is typically a term referring to a player in a video game who knows that they enjoyed a certain newer update of a game, but act as if an older update of the game was better, because it was more "nostalgic", even though the update didn't bring really good stuff.

"Season 3 was better than Chapter 2 Season 2"
"You are blinded by nostalgia"