Up until a few minutes ago, a relevant, important, and sufficiently constructive exchange was going on in the comments under this answer:
Now, however, the entire comment thread is nowhere to be seen. Not moved to chat; instead, gone without a trace. Every other comment thread, under the question post and other answers, appear to have remained intact.
Is this how things are dealt with around here, really? Still?
Anything that's not your opinion, gets destroyed? Silenced? Hidden?
Even after the simmering frustration of the past nearly one and half years?
What are your lamentations for, losing so many high-profile contributors recently? What had been learnt? Little?
Is there anyone who can restore the deleted comments (hopefully with the numerous votes cast on them still visible)?
Is there willingness?
Update, following motosubatsu's answer:
At this point I am unhappy with how the community has no option to see what comments we are talking about. Everyone who has not seen the original thread, will have to rely on the deleting mod's stultifying account of them, which, along with the posted answer's general tone, doesn't fall far from what is discouraged in the CoC.
Overall, the experience I am exposed to here is the insulting one, not my comments.
I maintain that my first two, thread-starting comments had entirely adhered to and fulfilled the SE commenting guide. If a third comment of mine fell out of line with the original intent of the commenting feature (the one labelled as "soapboxing"), I can admit to that (while I point out that it came as direct response to another comment, that was addressing me by my username). Regarding labeling the situation as back-and-forth discussion, there is a more fit and widely used moderation tool for that: moving into chat (implying that a link is left under the answer allowing users to access the migrated content).
I posit that the decision for the deletion came from giving way to political motivation and not from reasonably leveraging moderation options.