This was of course a terrible idea. However Trump knows that his base along with other idiots who believe everything at face-value will lap it up gladly. This can only help him, boosting his image.
The general is gone, but what have we done to actually stop whatever supposed plans were on-going? He already has a replacement, and it is well known that he is following orders from his boss, the Khamenei. Why is he alive?
The usual formula is set:
1 - America takes action under the guise of security
2 - American idiots will lap it up and think they are safe.
3 - America waits for retaliation ( which Iran prob has no choice in order to save face at this point)
4 - America goes to war, claiming it was attacked.
5 - Military business smiles and pockets money.
6 - Wait a few years, and choose a new target to do it again.
Can you blame the military industry? If Coca Cola needed a war to move inventory, they would lobby for a war too.