Awful advice. Guaranteed to get you charged.
Here is the correct advice:
1. Tell the cops you are the victim and you will fully cooperate, through your lawyer.
Call your lawyer. If you don’t have one, get one. A good one.
Don’t say another f’ing word until he tells you to.
Did you even read the original post, and the creds of the man writing it?
That is sound advise.