There are some QoL perks when you watch downloaded youtube videos through a selfhosted media server (e.g. jellyfin). Video watch progress is saved, and you can watch on all your devices (desktop, mobile, tv).
Sometimes I’ll watch something on my mobile while preparing food, and then I’ll switch to the TV when I’m done cooking, mid-video. This works seamless with that set up.
Yeah, I have not once seen anything of value in their “alternatives”, they always show the weirdest shit that has nothing in common with the other. It’s been in my Kagi block list from the very beginning, I don’t miss those results one bit.