It’s not obvious to me that a “nobody wants this” megaproject by a decades old multinational forced to succeed by government mandate wasting over a decade debating national workshare is a great example of a “startup in aerospace”.

There’s tons of startups making cool fused harnesses and phased arrays and trying to get every permutation of diesel and electric and hydrogen engines certified. Drones and rc aircraft spawn many “built in a dorm room” prototypes for people who don’t value their eyebrows