The statement within that context is that he has "no reason to commit to a woman."

I guess it could be just a statement of fact. "A lot of these people, they're just doing it."

It seems sloppy to throw that contextual tidbit into the middle of an unrelated sentence. Particularly given that it is a fact that doesn't really need to be explained to anyone listening. So yeah, maybe it is just sloppy writing.

But I think that is being very generous given it would have to be superfluous information within an entirely unrelated thought, meaning the writer basically made two mistakes at once.

People also tend to use with and therefore fairly interchangeably in colloquial settings.