They ended up only getting a few hundred Bucks, how could that possibly have been worth it for them?

If the debt collector bought the debt for pennies on the dollar, there are edge cases. Even then, it’s an expensive process to try and only works as long as you’re rooted in a particular job. As soon as you leave, the collectors have to go back and refile all their claims against you against the new employer.

So it generally isn’t worth the time, which is why the post is sus.