I use Vimeo for my technique videos because they suck and I can easily hide them. lol. Youtube has all kinds of algorithms that determine your frequency of being in “recommended videos” screens. These are related to your latest upload’s performance somehow. If it’s a channel you are seriously trying to GROW, It may not be good to host unlisted videos there.
YouTube is forever changing and you are pretty much dealing with AI algorithms that are triggered by the stupidest crap.
Just my 2 cents. What I say here may not matter now. I’m just superstitious about the “recommended video” algorithm.