Very few game sequels are that tied in to it’s predecessor narratively that this is an issue. I would say the vast majority of games are designed to be picked up from anywhere in the series.
Even Mass Effect, where you play as the same character throughout a multi game story arc, still has each game giving the player an on ramp, and each game having it’s own miniature arc to play through.
There’s plenty of proof of stake tokens that do not waste all that electricity that mining does