I disagree. Two weeks before the Olympics, the Olympic team should be training, not competing at 4CC. The events are too close together, not to mention that the Olympics already requires more stamina than usual with the addition of the team event.
The U.S. doesn't have to send athletes who are not subs; USFS sent the literal B team in 2014. I don't think Hubbell/Donohue's gold over Gilles/Poirier was a waste of the federations' money. Sending our next generation of dance teams this time isn't going to be a waste either. Sending our 2-4th best pairs teams isn't a waste. I'm not going to attempt to predict who the ladies and men's 4CC teams would be, but it's quite possible that it will be a mix of new talent who need championship experience and exposure and those who have competed for years for the U.S. and deserve to have a swan song final big international event. To me, that's a better use of the federations' money than wearing out the Olympic team right before the biggest event of their lives.