You have crafting, in raids. Seasonal/episode stuff takes half the amount of time and people raids take so you don't need crafting. It makes sense in raids since they are a big commitment and most importantly, they are VERY unrewarding so crafting makes sense. Seasonal activities give you a decent amount of loot for the amount of time they take. You can easily come out of the nether with like 10 weapons for 20 minutes of work. Raids you're lucky to get 1 weapon from a single 1 hour+ clear since you'll probably get armor pieces. Shinies exist in expert nether and expert court of blades.