Bieniemy is not going to become the next head coach of Washington IMO.
I agree that someone spending $6B on a team is not likely to come in and take 1 year of work as an OC for the former regime as the basis for offering the guy the keys to the kingdom.
What the NFL has taught us over the past X number of years with all of the coaching new hires is that there is diffuse talent out there, capable younger talent, guys that use analytics and employ innovative tactics and strategies in developing game plans.
McDaniel, McVay, Taylor, Shanahan, O'Connell, etc.
At 54, I see Bieniemy as being more 'old school' rather than in this latter category.
So, while I think he is capable of running an offense with the right mix of talent, I don't see him as a 'wunderkind' that is 1 in a 100 hire we can't allow to leave the building.
That said, the fact a number of the players already here didn't want to put in the work and time to master the offense and execute their assignments doesn't excuse the reality that they should be shown the door at the end of the season.