I have no advocated that anyone commit violence against "people online [I've] declared to be [my enemies]." In fact, in the thread you're linking to, right above the archived tweet, I say that I don't know what an anti-fascist movement in tech looks like. And today, years later, I still do not. But if you were ask me "hey Steve let's start a street fight with GamerGate, what do you think?" my first comment would be "what?" and my second comment would be "that sounds like a really dumb idea, don't do that."
You'll note that the subject at hand changed during this conversation: the parent I replied to suggested that I was suggesting something specific regarding the right wing in technology, but that response is about abstract antifa actions in France. It's also why I responded the way that I did: the equivalence between the two (European antifa and European fascist organizations) is laughable. But it's just Twitter; I'm not going to get into a debate about the details, I'm just going to say "okay" and move on.
But I did not and do not think, as I said above, that someone should go find tech fascists and cause them bodily harm. It's not something I did suggest or would support today.