"Environmental disaster"? A bit overdramatic, isn't it? The amount of "debris and dust" was absolutely minuscule compared to regular human activity in a developed country like the US.
unless something comes out in discovery, they didn't know it was going to do that. and they had a reasonable basis for that belief, in the form of the static fire tests.
there are no whistleblowers popping up. i haven't even seen any youtubers popping up with "i told you so!" claims based on all of the footage that was available of the launch site beforehand.
> considering what we've known since the Saturn V.
the saturn V launch facility is an absolutely massive pile of earthworks; it's perfectly reasonable to try and engineer something smaller than that when you want to build a couple dozen of them.