Did they nerf dungeon XP recently?

[Astrus]

Thanks for the answer, and for actually reading what I wrote

I don't recall this being an issue with SB or ShB, but I definitely noticed in EW that getting from 80 to 81 with roulettes was a bit of a pain.

Just to add that anecdote, I distinctly remember this being the case in SB because getting some alt Jobs to 61 to unlock HoH was a slog.
I can't speak for ShB/EW because there I made it a point to specifically spend my WTs completion XP to kickstart getting everything that wasn't leveling through the MSQ to 71/81 first so I could level some alt Jobs while grinding the Trust NPCs to the respective level cap.