In the time since the American Revolution, the powers of the Monarch have steadily decreased. It's largely a ceremonial and symbolic position now. Parliament is supreme.
OTOH, in the last few years, your Head of State (and Head of Government) has increasingly taken on the trappings of an absolute ruler. Congress has been diminished. The SCOTUS was recently attacked.
Nothing can disguise the sad reality that the British Commonwealth is now disarmed and that they voted for it.
As for Bammy Boy, he is:
1. America’s greatest arms and ammo salesman.
2. The best incentive to Constitutional studies since King George.