This is a narrow and incorrect view of morality. Correct morality might increase or decrease, call for extreme growth or shutdown, be realist or anti-realist. Saying morality necessarily petrifies is incorrect.

Most people's only exposure to claims of objective morals are through divine command so it's understandable. The core of morality has to be the same as philosophy, what is true, what is real, what are we? Then can you generate any shoulds? Qualified based on entity type or not, modal or not.