TVs don't support displayport, so it makes Linux PCs like the Steam Machine inferior console replacements if you want high refresh rates. A lot of TVs now support 4K/120hz with VRR, the PS5 and Xbox Series X also support those modes.

(Some games support 120, but it's also used to present a 40hz image in a 120hz container to improve input latency for games that can't hit 60 at high graphics quality.)