This "PIP" program allegedly worked out for them , but it might not for other couples...other couples might try different solutions.
The first page is just filled with stubborn post after stubborn post , like why would a woman want to deal with that in 2023
when they can just avoid the headaches.
You sound like a woman following simp

Of course it worked, the man has low self esteem and is afraid he can't do better as he views the woman above him.
A woman wouldn't even DARE try this on a man who she knows has a shred of self respect.