I don't think it's too negative. The actual complexity is high for the modeling, but very few of the abstractions are any worse than other many body simulations, unless you're studying specifically black holes or other theoretical edge phenomena, in which case it becomes hard to use the term "astro" instead of just theoretical physicist. Arguably magnetohydrodynamics has some difficult components, but it's not specific to cosmology.

Clickbait titles revolve around sounds and language though, so I don't know if there's a way to combat what's profitable and not strictly speaking misleading.