People quickly forget that SHB had ishgard restoration along with diadem rework. SHB relic also had solo instance similar to hildibrand but open world zones. Criterion was a risk they took that failed similar to the original diadem back in HW but on a much smaller scale.

Quality of content includes the rewards that content provides. Criterion is good in terms of content but terrible in terms of rewards which made it terrible overall.

Deep dungeon is content but should have been released at 6.1

We have reached the point where it is ok to take a break from the game especially with easy relic steps. If you dont like the game right now just take a break.