Non-technical users want easy solutions, and they need to be invested enough in your content to pass whatever barrier you put there. Projects like Floatplane[1] only capture a tiny segment of your audience.

Personally, I'd try a simple app that OAuths from YouTube/Google accounts and collects an email, so you control content announcements, even in case YouTube fails. It also has the advantage of being independent from other social media platforms.

[1]: https://www.floatplane.com/