Upon review of the initial post again, it seemed like there was a debate intent - based on a statement of opinion, a backing of that opinion, why contra-views could be considered wrong, and an advocacy of your point in the affirmative.
Likewise, engaging with each poster, inclusive of line-by-line, is debate in nature.
Also, 'shaming' really does not work in terms of changing habits (which, by all rights, is what the thread is attempting to do regardless of the intent of the mind of the poster, similar to the concept of not being a debate, the OP did make all of this happen).
To truly not have been a "debate' then an original poster should never argue in the affirmative of their position statement to start off with. In fact, to show it not a debate, nor to act like one does not care, it may have been ideal simply to post the original thread and never reply.