No this was regarding the weaponization and spurious use of DMCA against creators who were using MM and yes there was DMCA used by TFP against at least 1 creator.
So this is less about Mischief Maker and more about the threat made to DCMA content creators for MM (Mischief Maker) content, and if you look at their statement they do threaten DMCA strikes and they HAVE wielded the DMCA against creators already..
Content is FAIR USE first and foremost so...