I don't know any other anti-cheat that has used a blacklisted username as a mechanism. Valve did not bother to obscure any part of this mechanism, they publicly

I don't know any other anti-cheat that has used a blacklisted username as a mechanism. Valve did not bother to obscure any part of this mechanism, they publicly confirmed that this mechanism was banning people due to their name. This is an open source cheat that has not generated any revenue, and it was worked around as soon as it was identified. Regardless, saying that this changes nothing is ridiculous, this mechanism was aimed mostly at cheaters, with some innocent in the crosshairs. Now, all cheaters have worked around this and only innocent are left in the crosshairs.