I have not checked my feed for a few days it seems (where does the time go?) and found this very intriguing conversation about comments. I too have experienced similar comments from what appears to be a bad translation and thought it was from a bot. I took the time to look at the poster's profile and saw that the comment to me was in fact unique and not one that was repeated on many posts. I gave them an up-vote.

I've also seen the opposite, where I saw the same message in their out-going comments repeated more times than I cared to scroll through. In that case I simply wrote them back asking them to write something a little more personal. In those cases I generally do not get a response. I suspect it's because it is a bot account and nobody even reads anything that is sent to it.

I have much respect (and frankly, I don't know how people like @papa-pepper find the time to do the research) for people who are able to screen so many messages and make reasonable responses to so many comments. That is a skill I doubt I will ever master.