The paid way to do this is is to buy something like Streamfab to download the stream directly from the source. Note for the most part you will be limited to 720p/1080p. Another paid software that used to be around was Redfox AnyStream but they went offline last year.
Only private trackers / scene would know about 2160p / 4K downloads and they're not going to share publicly about their methods.
The free method is to attempt to do the video capture yourself (see earlier comments) rather than download the stream itself.
Of course for the most part tons of content has already been downloaded by others and made available via torrents, DDL, etc.
Strange, are people really arguing that? Back in 2020 Alexis Ohanian resigned from the board of Reddit and asked for his seat to be replaced with a black candidate. Say what you want about the guy but he doesn't seem that out of touch with America's racial issues.
https://www.cnn.com/2020/06/05/tech/alexis-ohanian-reddit/index.html
I don't have any issues with the guy but IMO the Digg thing may end up going nowhere if they're really planning on relying on AI for moderation, just seems like like a bad idea overall
https://www.theverge.com/social/624073/digg-relaunch-2025