Again, some mobs will have their xp buffed, some nerfed. It is a rebalance, not a nerf, and a rebalance based on feedbacks of players, including "old school"ers who like more HP = more xp.
Why don't you show us the likes of banshees getting almost 4x the current xp (58 -> 217) and bloodveld from 125 -> 512 for another 400% gain?
https://runescape.wiki/w/2023_changes_to_combat_experience
27-Jul-2023 21:58:58