I wouldn't describe that as "maliciously attacked PyTorch"
Sure, yet that's one tweet and his tone is pretty telling if you ask me. Disregard if you don't believe, I'm not making it up
I encourage you to reread the Twitter posts in question, your post here, and evaluate, as if you were a disinterested third party, if it still makes sense.
Based on the evidence you provided the only malicious attack is your own.