I am sure the king mostly likely does not approve of any of these new powers, however as monarch he is politically neutral so if the house of commons and lords pass a bill he just signs it, as far as I am aware he can't refuse to do so.
As Prince Charles he could express an opinion even though he was meant to again stay neutral.
He is a constitutional head of state.
But yes, we should be concerned, and prepare to vote this government out in 2024