Editor, Experienced Forum User, Experienced player
From a technical standpoint, if BizHawk's PlayStation core can open the game, you can submit it as a PlayStation TAS.
But from my understanding, like games for the Uzebox, many Net Yaroze games weren't widely known and few received an official release, so they would fall under our non-official games rule.
If the game has a following or has interesting gameplay (like Hover Racing), you could try posting a TAS of it on the forums and see what people think. It really depends on the game. For example, three Uzebox TASes have been submitted and accepted, including one that was deemed not to be entertaining. However, another was rejected for being a bland game choice.