I didn't really know what they meant by it. Sounds like "the fact that you do this proves that nobody does it".

It's a common rhetorical technique that never convinces me. I'm not convinced this guy's anecdote is an exception to some rule.

I knew what he meant and still thought it spawned an interesting discussion. Mainly because I've never quite intuitively understood that saying. So, I did not take it as OP being tedious about it at all.

That’s why we’re all here together friend.