Priest have 1 DPS spec, warriors have 2 DPS specs. pure? there are no pure Tanks or healers.
Yep. I played a Holy Paladin from classic > WoLK where i did play a feral druid through to WoD with a few stints on the hunter through cata.
If you have seen that phrase used in shadowlands its a personal problem. Druids have been consistently at the top and most sought after this xpac. If someone is asking that about you in your group, thats all you. Maybe try another class, you didnt sign a contract with the devil to only ever play druid.