Throws did not lose to normal attacks. You could be thrown out of an uppercut, a poke, or anything else if they were mistimed. D2s weren't given any special invulnerable properties.That's why I said, 'as far as how D2s interacted with throws.'
I'm pretty sure throws lost to uppercuts no questions asked (meaning no having to neuch and wait for the throw to fully whiff)
People just notice more readily in MK11 since throws/shimmies are used significantly more, and so ducking to bait throws is a much more prevalent part of the meta.