Using your logic there is no scientific theory for the origin of life and the creation of the universe. (because currently none of these theories can be proven true or faluse by science)
You are misunderstanding how science works. Theories are often "outside the realm of science" - that is the POINT!!!!!!! If science can already prove a theory – is it a theory? NO!!!!!!!!!
Using your logic, science can only study things that are already proven (making it impossible for science to discover anything new).
Basically, you are using unscientific, broad-brush statements to try and unscientifically discredit a theory. You apply rules to other people’s theories that your own theories cannot sustain. I think that can be called scientific hypocrisy.
Good of you to notice. You are correct.