Did you know, Invidious has an RSS feed for your subscriptions? So not only do you not need a YouTube account but you also get private, ad-free viewing alongside that feed!
My biggest complaint about teddit and libreddit is lack of an account. All subscriptions are stored in cookies, so it’s a pain if I want to browse the same content on my phone and desktop. I am actually considering a bit of a stupid simple/quick hack where I could visit a site on my network which would redirect to the URL that restores your subscriptions/settings cookie.