A lot of it comes from people who are anti-Elon and are against everything he touches. So they become anti SpaceX. Then they become anti-aerospace.
They don’t understand, or even want to understand, the science and importance behind it’s advances. The thought process just goes Musk Bad>SpaceX Bad>Aerospace Bad.
Remember how in Interstellar, there’s that teacher who was casually teaching that the moon landings were fake? Like, society had reached a point where they cared so little for space, that they actively turned a blind eye towards its accomplishments or just straight up dismissed them? I feel like that’s the path we’re on. Because of people’s blind hatred towards a rich douche, an entire EXTREMELY IMPORTANT industry is becoming reviled through sheer ignorance.