because the DR has been talking about the mechanics of political and social change in the US since the mid 90's. Cthuhlu swims left, the cultural ratchet effect.
FFS, Pat Buchanan and Paul Gottfried were ringing the alarms about what Reagan really was about in the 80's.
Despite the histrionics about Trump, what we see is... actually just continuation of agenda, with theatre to distract the normies.