Wow. I'm subscribed to 13, and only one will be left of 5 of those once I figure out which is the best replacement for the defederated !Literature@beehaw.org.
~160 communities would be too much for me. If something isn't my active interest, I prefer putting it into my locally hosted MediaWiki.
Also, some m3u8's are just files containing redirects to other m3u8's in various resolutions. You might want to extract the one you need and download that.
I have a MediaWiki instance on my laptop (I've found the features of all other wikis/mindmaps/knowledge databases decisively insufficient after having a taste of MW templates, Semantic MediaWiki and Scribunto).
Also some smaller things like pihole-standalone, Jellyfin and dictd.
Or rather Electron apps.