It's a dim new trend out in bloggy-land to call anyone who criticizes anything a "hater."
Think Donald Trump would be a bad president? You're a hater.
Think Hillary Clinton is not trustworthy? You're a hater.
Think Millionaire Chess made huge errors with sandbaggers in their last tournament? You're a hater.
There is good criticism, bad criticism, and plenty in between. But calling any of it "hate" is just a lazy and insulting attempt to chill conversation by attacking people as intolerant.
The best way to deal with it is to totally ignore the person saying it, since they are patently ignorant and have nothing else to say.
In this particular case, the poster put up a long thread on Millionaire Chess 3 that revealed him/her as a shill for the company, because he/she announced information about the tournament that has not been publicized anywhere else. So the call to ignore is even stronger.
If somebody can find a way to do it, more power to them. But, if I were a strong player, I wouldn't hold my breath.