They're on board with it because they think it will only happen to "those people" and will be appalled when it happens to themselves or at least their neighbors and friends and families.
Congress is categorically useless, and the ultimate judicial authority in the country - and a disturbing proportion of lower courts besides that - have been completely co-opted. And nobody anywhere who has actual power to push back is actually pushing back. I don’t think even a military coup in either direction would help things at this point. I think the US is headed for breakup and balkanization. This goose is cooked, imo.
Yeah my money is on a Soviet style break up, I doubt there will be much fighting during. I also doubt there will be a Russia analogue since there isn't really an equivalent state maybe the great planes could unify but they don't really have the population to be warmongers.