As a reductio ad absurdum, suppose you and I are medical researchers. We're trying to figure out the best way to treat Disease D. You favor Treatment A, I favor Treatment B. We participate in a public debate defending our respective preferences. Suppose as more data comes in, it becomes abundantly obvious that Treatment B works way better, and Treatment A actually exacerbates Disease D. I acknowledge that reasonable people could've favored Treatment A at the time we had our debate, and you acknowledge that the new data favors Treatment B. Nonetheless, some people in the audience of our debate felt you were persuasive, used Treatment A on their patients, and their patients died. Does that make you a murderer?
The scenario can be progressively modified: Maybe there was recent research showing Treatment B worsens Disease D, but you hadn't read it yet. Maybe you made a mistake in your statistical calculations. Maybe we decide you are a murderer, in which case no one wants to debate medical questions anymore lest they be declared a murderer, and the medical field languishes instead of developing new best practices.
>I should hope it's obvious I don't believe it's as harmful a form of violence as physically harming someone.
To play devil's advocate -- it wasn't obvious to me, and I think people with less context will find it even less obvious. So from the exact point of view you're arguing for -- creating a causal chain to physical harm -- I'd say overusing the word "violence" does have the potential to create harm, through the escalation of antagonism as I described previously.
(BTW, although I think you're mistaken about the use of the word "violence", I would consider your claim to be protected speech, and don't think censorship of your claim is justified -- e.g. if the HN moderator stepped in and deleted your comment, I'd call that an overreach.)
>We use the word violence to describe many remarkably different in nature things
I haven't noticed this.