By contrast, I think that the visibility of discussions surrounding asexuality and people identifying as asexual has grown very rapidly in the last 10 years, much like the discussion of trans experiences.

Yes, definitely.

Although, many of the TV shows and movies that I love (*ahem* I'm looking at you, Marvel Movieverse) have still barely managed to realize that gay people exist, let alone trans or asexual people! So representation-wise, there's still some distance to go.