Look, I get the societal development that you can input narrative text and the code for this pops out is super neat.
But trying to be fair here, anyone would call this incomplete, right?
There are several obvious bugs in styling and interaction.
This example is exactly what I was expecting. An ephemeral, simple-yet-buggy single page that’s barely a game in common understanding.
That person, while maybe not actively programming things, does appear to have forked several repos on GitHub a decade ago. I would say that’s above the level of technical competence implied by the “my grandma” phrasing of the OP.