Rampant sharing of authorship among colleagues in the name of "collaboration". Is not taking part in it a death knell for a future in academia?
I can tell you from the perspective of a person who was on hiring committees that these kinds of ethical indiscretions are easy to spot and are not well received. To the point, we rejected several applicants because we suspected they weren’t sufficiently independent after graduation as they weren’t lead authors on enough publications.

First of all, word gets around. If a PI lets their group slap their names on random papers, hiring committees will take notice, and will not take these applicants seriously. Second of all, we ask questions! If you obviously know nothing about papers you coauthored (yes, it’s obvious), that reflects very badly on you. Finally, if I were you I’d emphasize that on the few publications you have you are the lead author. 

That said, your colleagues can partly get away with this: publishing is a numbers game and I don’t know how hiring committees think in other places or fields.