Fox Corp. is making a dramatic move to expand its streaming footprint, unveiling with plans to buy Roku in a deal that values the streaming platform at $22 billion.
Outside of SteamOS idk if Linux (not Android) had slick console/SmartTV-like DEs/system-wide GUIs. But since the problem is on the surface, I believe there are some who tried, or configured/themed their environment to act like it.
kde-bigscreen is available, and has that sort of ui, but does require some setup. Also don’t know how available it is. I believe it is already in some repos.