Blender was made for Linux, the compatibility issues happen with windows (they’re still really rare, blender is an amazing program).

Dunno about houdinifx, I don’t know that software.

And I’m assuming you mean Unreal Engine with ue, in which case, game engines not only should work on every platform but they’re especially tested on linux cuz many developers use Linux.

As long as you are in some way connected to the same network as the TV (by cable, wifi, black magic…) you can use jellyfin.