Obviously, we can't know about the specific women in question, but......
You sure do hear a lot about being tired of feeling like if there was a pause remote button, the wife could remove and replace herself with a blow up doll, hit the resume button and the husband wouldn't notice, don't you?
There's a lot of comments about being used as a toilet seat for male sexual desire, "cum buckets" is a phrase you hear too often.
Lot of talk about being sexually bored of their minds. Libidos being killed dead by male ego bullshit. I've got a funny story about that, about a guy that got dumped on the spot about his sex centered overly inflamed ego.