First of all, is that actually their level of education or are you just making stuff up?
Second, that's irrelevant to my point that the engineer is responsible for communicating, not just figuring stuff out. You cannot say "if you don't get it, that's your problem" when their not getting it means people die.
The slide in the OP is a completely standard way of commumicating information in the aerospace industry. If the NASA personnel had problems understanding this slide, then they also had problems understanding virtually every other piece of technical info that was ever communicated to them by a third party. College level reading comprehension means being able to understand nuance, which this slide conveys.
All you're doing here is convincing me that this wasn't a one-off and the aerospace industry has a pervasive problem with communication.
The average IQ and level of English proficiency is much higher in aerospace than it is building web apps.
Manifestly the high IQ and English proficiency in aerospace does not extend to the ability of making slides that are not completely a mess