It is not even just about that, in order for something to be a "scam" we need someone to scam someone, here we are talking about a person who is ignoring the fact that dude just got free money and blocked from getting that money. How could we really call "I couldn't claim my free money" as a "scam"? If it was something like "I deposited money, gambled, won, and wanted to withdraw, but they blocked" then I would totally understand because it is YOUR money that they are keeping.
A little correction: He wasn't blocked from withdrawing his winnings. His faucets were disabled _after_ withdrawing. So his accusation is bullshit in any way; he can't farm any longer and that's about it.