You sound like you're disagreeing with me, yet what you write is inline with my opinion, but I might just be misreading your comment.

I wrote in my OP that 'even on Linux, the changes happening are stuff like bugfixes and reducing jank; small incremental improvements that have already been done, but are just getting their final round of polish'. The comment I was responding to claimed disagree, and said that KDE does get improvements. I wanted to clarify what improvements those are, since I can't see why they would disagree with my original comment in the only improvements in KDE are 'stuff like bugfixes and reducing jank; small incremental improvements that have already been done, but are just getting their final round of polish'.