People will never listen to you no matter whatsoever proofs you may give to them.
Most of them are either shills of competing sites or most probably some buthurt gambler who coulnt afford to loose what he actually gambled with and now is really pissed with loosing all that money.
to be fair I can't blame him cause when I was first introduced to a dice site I thought the same thing every time I had a long losing streak
at the end people learn the lesson the hard way and then they realize that it's not the site's fault
some gambling affiliates on youtube for example mislead the newbies with false informations , check out this guy who keeps telling his followers that his methods work on the casinos that he promotes
https://www.youtube.com/user/ToughLife2007The player is the only one to blame in this case. He has profit on at least one coin and he was on profit before he lost, which means player was greedy for more. And we all know the risks of gambling. Sometimes you win and if you don't know your limits you'll eventually lose.
If player can't handle losses, he shouldn't gamble at all. Nobody likes losing, but you gotta know the risks and you gotta deal with it. Instead of blaming a casino with a very good reputation, the player in this case should blame only himself.
And about the youtube videos: everybody should know that there are no 100% winning strategies. If there were, people wouldn't be sharing these strategies. They would be making themselves rich instead