My comment on this answer appears to have been removed. Is there some record of the reason it was removed that I can access? If not, I would appreciate if someone could provide me with an explanation for future reference.
I wasn't involved with any of the moderation on that particular question, so I'm going to try to answer the question from inference based on the data available. I reserve the right to be wrong. ;-)
The question suggests that suicide might be a logical answer to the apparent absurdity of life discussed in Camus' The Myth of Sisyphus. It's not a spectacular question as it doesn't seem to grapple with the text itself. Certainly, I'd expect a quotation or detailed discussion rather than a series of broad queries. It's also the sort of question that often leads to chatter rather than interesting philosophy. As it happens, question itself has been flagged 5 times in relation to comments. One of those flags was an automated flag for too many comments. In other words, the question became a locus for idle comments.
The other answer, which brings in several other philosophers in a general way, compounded the problem. It's a helpful answer in terms of providing grist for thinking, but it isn't going to help anyone learn much about Camus nor existentialism in general. Looking at the comments you can see how they stray even further afield.
Stack Exchange sites work best when they are focused on answerable questions. What Camus had to say about the absurdity of live is certainly answerable. Whether life has a meaning is not. Or rather, it's a much bigger question than I expect to see adequately covered on a humble Q&A site.
So I think it's entirely reasonable for a moderator to move the discussion to chat. They have a tool that allows them to move all comments to chat and (optionally) purge the comments. This is often the best course of action when the comments are strongly tending to be chatty. If you happen to have a relevant comment, it might get swept up in the noise. That's one of the reasons moderators might suggest working the content of your comment into an answer, if possible. Answers are far less liable to fruitless back and forth conversations.