It seems if you do so, you are severely taken to task.

You can be critical of whoever you like, but others can disagree if they wish ...

Of course you are. And other people are allowed to disagree with your criticisms.

I can't stand Artem. He's such a grouch, his choice of music is downright bizarre and he choreographs routines way too hard. He wasn't easy on Kara and he's given Holly far too much to do.

Sheesh. Are you at it AGAIN? You can express any opinion you want, but hitting on one contestant, time and time again, in a rude and aggressive manner, is not going to win you any friends.

Goodness, OP. Put a sock in it please.

Holly, yes. Artem...not so much.