I didn't say you should try or expect to convince them of anything. Just pointing out the error is enough to let anyone curious enough follow up for themselves. I say that about this post because the person seems to have a genuine intuition about the vague idea of collective ownership.

You can't expect to convince someone in a single argument.

For myself, when I was still in a liberal mindset, I had someone on reddit say "down with democracy!", and I called them a fascist, because that sounded pretty fashy to me and it was during trump term 1 when those guys were really stretching their assholes and letting the shit flow.

They said actually no, they were a communist, so I just dropped it. I could tell they were being sincere but also I didn't really want to take the time to unpack their point.

It did flip a switch for me though, that someone was openly declaring to be a communist. It was definitely part of my walk away from vaguely status quo liberalism towards full anarcho communism.

I still think the way they said "down with democracy!" was bad rhetoric, and I understand they probably meant "down with liberal democracy", or maybe "down with representative democracy", or maybe they were some sort of weird nazbol and they really did think democracy as a concept was bad. Doesn't matter, it moved the needle for me.

Anyway, point being a sincere answer whether it's very well articulated or even correct, is usually better than making up some bullshit in some misguided machiavelian manipulation.