The problem here is that the developers think there are two main types of players:

-Those who have a lot of time to dedicate to the game and want challenging content to go along with it.
-Those who don't have a lot of time to play and want a more relaxing experience.

However, there are really FOUR main types of players
1. Have a lot of time + Want a challenge
2. Have a lot of time + Want something relaxing to play
3. Don't have a lot of time + Want a challenge
4. Don't have a lot of time + Want something relaxing to play

Nerfing the old content as new content is added completely ignores #3, I'm not saying they should NEVER nerf old content, but at least wait for a couple of content updates before starting to.