Not who you were responding to, but it took me weeks and several iterations to get an acceptable working HTPC for the family. Sure what you described can get you up and running in Netflix in a browser rather quickly, but try handing that solution over to a 6 year old and see how that goes. That experience is nowhere near what you get with say a Google tv, where everything just works right out of the box.
Linux can't do streaming on the major apps over 720p, there are no apps designed for the TV, you have to use the browser. The Jellyfin desktop app is pretty bad on Linux, and so is Plex.
The solution I finally landed on was Kodi with the Jellyfin add on and a flirc remote. That works well. But it's not something you are going to get working in 30 minutes, and you have to go full pirate. It is a terrible experience compared to Google tv otherwise.