I didn’t even notice this until now. That’s absurd. You can’t even get that specialization with the standard edition, which means you can’t unlock Super Heavy either.
It is also, I agree, absurd that none of the premium deluxe work in career mode? I don’t have PD at the moment, as I was planning to maybe just buy the individual aircraft I Want ala carte, but I just assumed things like the Cessna 408 and H225 worked. It’s insane that they don’t!