Rivera is the best-case scenario for the Redskins considering the organization is such a dumpster fire. Plus it sounds like they're crap canning a ton of people like the head trainer.
Riverboat Ron isn't some amazing coach but he's competent enough to keep the team competitive which is way more than you can say for anyone else they could have hired. The Redskins are at a point where competence and not being a joke on and off the field is more important than trying to outsmart everyone with a wonderkind HC.