Dealing with D&D5E Hate and Pathfinder 2E

I have been trying to get my partner into Pathfinder 2nd edition, and they do seem taken with it, however he's been having some issues lately with PF2E. Notably, online. The more he gets into PF2E, the more hate he sees for 5E. He's been playing 5E for years now and has invested a lot of time and love into the game, and to see...