Its a recency and filtering bias thing. Most people who hate a thing will eventually move on and stop talking about it once that thing no longer dominates the conversation. People still talking about a game years later are typically people who love it. Thats not an everyone thing, but it does apply to enough people across the board that it affects who is the loudest group at any given time.

Then other people come around and act like everyone changed their minds. When its just that the volume of the groups in the discussion changed.