I won't block 'em, but tbh, some of the titles are real cringe, which is a good indicator for who to avoid, I guess.
If an irritating one shows up, you (or anyone) are welcome to give us a heads-up at hn@ycombinator.com.
The next time, I'll report when I come across them, but know that most of us on news.yc drink a lot of kool-aid and live in a bubble of our own (: