He can think it, but it's classless to say it. Plus, what have he and Dwight ever won?
Not to defend these two, but Howard has won multiple DPOY awards and was the best player on the team that beat that Cavs team that looked all but invincible in 2009, before falling to the Lakers in the finals, so at least he has a conference championship. As for Harden, well, he won the 6th man of the year award in 2012, I believe, and was a huge reason why OKC beat the Spurs, although he was atrocious in the finals against the heat.
All that aside, I wonder what McHale and Olajuwon think of such comments. See, again, this whole concept of a, "supporting cast," is detrimental to the teammates of guys like Jordan and Lebron, who referred to their teammates as such, almost throwing them under the bus in doing so. Even Magic was reportedly a guy who chastised his teammates. What all of this proves is just how great of a leader Bird was. Yeah, he had Greg Kite on his team, but he supported the guy because he saw how hard he worked. He didn't call him trash, or anyone else a, "role player." They were his teammates. That's the difference.
I can't stand Howard, anyway. Man is he a dirty player. As for Harden, well, we all know how horrible he is defensively, and his fashion choices are right on par with Westbrook, Durant, and Paul George in post game interviews. Is he trying to look like a clown? He really needs to cut his beard before something starts growing in there, btw. Yuck.