The reason the term “involuntary” is used is to differentiate from voluntary celibates, like Catholic priests, who the cultural zeitgeist most readily associates with the word “celibate”. You’re reading too much into it.

People often intentionally use the wrong words when describing themselves when using the correct words makes them sound bad. "pro life" "national socialism" are a couple of well-known examples.

The first person who used the term "involuntary celibate" was using it for sympathy, not accuracy. "Involuntary" was never the correct word because "celibate" wasn't the correct word, as "celibate" has the connotation of being a choice. They used the wrong term because something like "sexless" doesn't get sympathy.

Like, seriously, I’m giving you my personal lived experience, and you’re putting words in my mouth and calling me names.

I probably shouldn't have talked about "you" so much, but the reason I did is that you are talking not only about yourself, but about the subject, and I realized that you haven't actually changed, and that you still need help. And I don't remember calling you any names. And I'm not putting words in your mouth. I am literally quoting you. I am using your choice of words to expose you to yourself.