I don't mind it being ridiculous, especially as the time travel logic wouldn't be as ridiculous as some of the other writing on these shows if time travel required them to ride a three eyed donkey through a fountain of pudding. I'd just like them to pick a metaphysics of time travel and stick with it. If you add in legends of tomorrow they have practically every fictional time travel logic all being true depending on the episode, and there have been episodes with three or four different ones operating within minutes of each other.