Yes/no, "Some channels definitely still have this sort option available". Many smaller (?) channels still have this button. Also sorting by date still works for

Yes/no, "Some channels definitely still have this sort option available". Many smaller (?) channels still have this button. Also sorting by date still works for all channels after editing URL. I don't know exactly, what is the criteria for hiding that button, but consider size/geography/political views/ability to inject ads/etc. YouTube shadowbanned comments, likes, videos for a long time; consider this as another technique of shadowbanning without explaining anything.