We're getting stuck of who's allowed to be called an apikores and in what era it is or isn't appropriate. My point is that pointing to Tanya 32 isn't the breaker here since he excludes apikorsim and that is subjective as we see right here. This is a very famous perek in Tanya and Tanya in general is a staple sefer chasidus everywhere, so nothing really new there.
And according to the Tanya people like CW will be included in his first part. I didn't see the outrage when there was ym's labled on him, which is likely unwarrented according to the Tanya, as much as we hate him. (his actions...)