Yes, but not because they are complaining. As consumers we have the right to complain about something we feel is not right.
The reason they're "too self-entitled" is their attitudes that surround those complains.
The attitude is that they are always right and there is absolutely no way they are wrong.
Too many dismiss any arguments that disagree with their complaint without even trying to see it from another point of view, and thus they make little to no effort to defend their position.
Not backing up your point makes it look like you don't have a point.
It doesn't matter how right you are, or how poor the counter-argument is. When you simply dismiss any counter-arguments, you make yourself look self-entitled. Just yelling, "F*** YOU!! You don't understand!" is not how you argue a case. Unfortunately it seems that's all many gamers can do, or are willing to do.
The attitude can be summed as follows:
"I'm right and anyone who disagrees is a (insert insult of choice here)!"
PC gamers are the worst about this, but that probably is simply because they're also the most vocal. It's simply the Law of Averages.
Nothing wrong with being vocal. Certainly console gamers could stand to be a little more vocal.
It's just when you take the flawed attitude of, "the customer is always right even when wrong," is when you cross the line from concerned consumer to self-entitled brat.