Really. Especially taken with the "toy" statement that follows, this reads to me like "this isn't perfect but we had a good crack at it and are happy with how good it came out for our purposes".
What I’m saying is that this is almost certainly completely untested and entirely reliant on the fun game mechanics used to simplify the experience of playing Cities: Skylines. Like, iirc, the game does not implement any sort of rush hour logic.