Most people want to hire the best candidates they can despite some of the misaligned incentives. You don't want to spend overtime on someone else's bug because you hired poorly. The risk of a smaller bonus or less promotion chances is complicated as sometimes there is more available if the teams performance improves as a whole. When you deliver on a major project the team's pie is often much larger, and even if you end up with a smaller slice of said pie you're usually better off.
If any of that were true, we'd have universal healthcare and live in a utopia. Crabs in a bucket. If you're focused on the ladder, you're not going to hire someone that has the potential of making you look bad.
