You can flag whatever you'd like, but

> If you flag something, please don't also comment that you did.

http://ycombinator.com/newsguidelines.html

> You can flag whatever you'd like, but

No, you can't. If you flag articles just because you are tired to see some topic in the front page your flagging habilities will be removed (happened to me).

I just said you could, I didn't say it was a good idea.

fair enough

I didn't know that, I just unflagged the submission.

It actually feels like a bunch of experts in our field having an intellectual debate about an important aspect of the profession in public. If that's not relevant, I don't know what is.