Correct! I get confused sometimes! :)

RTMP cameras with Motion: https://motion-project.github.io/

I use https://tt-rss.org/ The devs are kinda jerks, but the app works decently if you can self-host. Theres also a couple of phone-apps that work fairly well.

I used a Steam Deck dock with an HDMI out. Worked just fine!

I used my SteamDeck as a media center for a while, and it worked pretty well. I never had any battery issues. It did have a little bit of trouble on super high-quality videos, but it worked well enough for the rest