Let's assume that what you're asking is "should we allow ITG questions based on artifacts other than game assets or screenshots?". If you actually mean something else, please clarify your question.
The main issue is that a lot of games are quite hard to conclusively identify from a description. For example, would you be able to tell FIFA 2020 from FIFA 2019 just from someone describing it? Would you be able to tell apart Call of Duty Modern Warfare from Call of Duty Modern Warfare 2019 from a campaign description? If I said "strategy game in which you control historical armies", would you be able to say conclusively whether it's Age of Empires, Empire Earth, Rise of Nations, Stronghold or maybe even something else?
We ask for a tangible piece from the game because we're feasibly able to do that, and our ITG questions are intended for people to be able to know what the game is they saw displayed somewhere. The story Identification questions on SFF are intended to help people remember the movie they saw, book they read or game they played, set in an SFF world.