It's difficult for me to read this as anything other than dismissing this person's views as being unworthy of discussing because they are are "non-technical," a characterization you objected to, but if you feel this shouldn't be the top level comment I'd suggest you submit a better one.
Here's a more detailed breakdown I found after about 15m of searching, I imagine there are better sources out there if you or anyone else cares to look harder: https://www.reddit.com/r/youtube/comments/1lllnse/youtube_sh...
To me it's fairly subtle but there's a waxy texture to the second screenshot. This video presents some more examples, some of them have are more textured: https://www.youtube.com/watch?v=86nhP8tvbLY
Perhaps a useful analogy is "breaking userspace." It's important to correctly diagnose a bug breaking userspace to ship a fix. But it's a bug if its a change that breaks userspace workflows, full stop. Whether it met the letter of some specification and is "correct" in that sense doesn't matter.
If you change someone's appearance in your post processing to the point it looks like they've applied a filter, your post processing is functionally a filter. Whether you intended it that way doesn't change that.
No need to downplay it.
ETA: I rewatched the video to the end, and I do see that they pose the question about whether it is targeted at certain content at the very end of the video. I had missed that, and I don't think that's what's happening.