This is a pretty insecure thing to say. You may as well tell people their not allowed to voice their opinions and have to worship whales. People are free to state their opinion, it doesn't mean it's right nor does it mean you have to agree with it.
It'd be like me telling you to quit it with the complaining about not getting any 4* tanks from factories, which you did after you did, like players did when they found out about the PoC rules that makes it fair enough to some level, at least early on.