I guess 1. it might only cover a fraction of comments so if you do it unintentionally and it doesn’t work you don’t notice so that’s a big bias 2. I didn’t try very often so it isn’t statistically significant 3. when I tried it often was in direct or indirect response to the bot so there might be a filter on the bot’s side.
And I sound like I tried more than once, I’m not even sure but surely at least once and at the very most thrice