mpv supports Dolby vision (along with the Jellyfin clients that depend on it), but if you mean with streaming services, that’s unlikely to happen due to DRM.

Youtube varies from genuinely good content, to generic filler, to complete and utter trash, and there is much of the latter two because it’s not curated by anyone (other than by algorithms).

Try “We Own This City” from David Simon, if you want a documentary on the police that isn’t propaganda.

I’m almost at the point where all of my connections are IPv6, but still hampered by my mobile provider (ironically, since IPv6 was generally adopted earlier on mobile in many countries).