Hopefully this doesn't mean that the right wing will keep wearing MAGA hats and keep bitching about their loser club 100 years later.

Ship of Thesseus paradox. When a ship has most its parts replaced can you still consider it the original ship? This is how political parties have run. Democrats and Republicans have completely changed their philosophies since the 1960s. Republicans were also considered the most progressive party in the known world pre-Civil War but does that truly matter today? No.