They've determined that it's not a violation of free speech because China, and that it's not a bill of attainder because China. You could replace "China" with anything.

What does it mean to be a "foreign adversary?" When did voters get a say in that? When Democrats (and every media outlet) were accusing Trump of being a secret Russian agent, and people who supported him of being traitors, would it have been legal (and not a "punishment" but a "prophylactic" as the appeals court said about TikTok) for the legislature to limit their free speech by name?