I know Blizzard made a recent change to up the hp of mobs in the game, but I thought it was to address leveling in Dragonflight content, not ALL content.
I copied a level 20 priest of mine from live to beta to test out the leveling changes to find out that my stats are really bad.
This is an Heirloom weapon at level 20.
I really hope this is being looked at and just an oversight when buffing the mobs in Dragonflight. If this goes live, you just lost all gear progression in older content and heirlooms will never be worth upgrading.