Yeah but with Obama and his predecessors it was just about money, everyone knew the score. This could be bargained at diplomatic level with other stuff. Trump looked willing and able to actually do the unthinkable and redeploy away, irrespective of strategic considerations, and his closeness with Putin and Erdogan was unsettling.

Biden will likely mark a return to the old haggling, but in 4 years' time the US might get another strongman and we'd be at risk again. Democracy will always need an arsenal, and it's not a given anymore that the US really want to be that arsenal.