unironically, he ought to be next, and he better know it, and he better go quietly

this means that if Unity sends you a bill, you don’t have to pay it, and if they take you to court, you prove that you’re acting within the terms of the license you agreed to, which keeps your lawyer fees to a manageable level because you already have all the documents you need: the contract and your source code.

I mean right? IANAL.