After years of daily roulette and having leveled all three healers, I have yet to run into a helpful and patient player with the mentor crown. To me, they have mostly not acted any different than me or any other average long term subscriber.
I myself am guilty of not saying anything when a new player is making mistakes. But I don't pretend that I am a helpful player just so I can get a badge next to my name.
You know who you are