Of course they do. If someone plays bad, he'd get his fair share of criticism no matter if it's Del Piero, Buffon or Molinaro. Del Piero's had lots of severe criticisms in the last weeks, some of them were fair while some were not. If you haven't seen much of this in the last few seasons, that's because Del Piero has been one of our best players in the recent years if not the best.
Elvin didn't say anything bad about Trez either. This is why I said bringing up Del Piero to this was uncalled for. One might not be a fan of Del Piero's playing style, one might not like him keeping the ball too much and Elvin might not be a fan of Trez's style who always needs to "get service" to score. It's just a matter of opinion or taste.