The only presidential admin he sat out of was Trump's going back to Bill Clinton. And Biden gave him a think-tank then campaign job in the during Trump's term before bringing him back.
Blinken is a giant pro-genocide piece of shit, but he's also a giant red flag that both our parties agree with him and his positions regarding Israel and what is acceptable from them.
The problem won't be fixed by ignoring it. And the most common sense approach to fix is getting money out of Dem primaries to limit outside influence.
Once we do that we can worry about fixing Republicans, but we have to secure our own mask first in the event of an emergency