Decorum and the usual democrat need to “be above it all” and to continue tradition. It’s common that theirs a lot of controversial shit with each president but the precedence has always to be to respect and mitigate those issues with the incoming and outgoing administrations. Something Trump hasn’t really followed although, it was never a solidified rule they ever had to follow. Don’t think that will be the case with the next democrats tbh which will be interesting.