“You can be against the Iranian regime and critical of the US/Israel military action at the same time.”
Just like you can be critical of both the Hamas attack of 7th October 2023 and Israel’s horrendous overreaction to it. Unfortunately, the agenda to divide and rule means that anyone who holds more than one position at a time is derided: “Either you are with us, or you are with the terrorists” as George W. Bush infamously said in 1991.