Extensible scheduler class rejected

I fortunately don't ever have a need to interact on LKML but I do end up reading a fair few threads for various issues, and even nowadays (it used to be a lot worse) there are a lot of "core" developers who consistently act in ways that I would expect to result in at least a written warning from HR in most places of work. This particular example is on the friendlier side for LKML - at least it's actually fairly technical and isn't just a childish personal attack, an ego-led rant belittling the patch submitter, or a one work "NAK" with an outright refusal to interact at all.