It all depends of course on how far you are away from Reference when you listen. From what you say above, if DEQ is required to give the bass that deep down ooomph, you listen well below Reference. For those who listen more closely to Reference volumes DEQ doesn’tdo so much. And of course, at Reference, it does nothing at all.
Most people don't have any problems with what DEQ does for the bass - it's what it does to the surrounds that people often dislike.
Interesting subject on the level one listens at with DEQ engaged....
Until recently I used to own the Integra 80.3 prepro all connected with xlr cables. I've wanted for ages to connect my rear channel speakers but couldn't run 11.2 since I use highs and wides with the 80.3. While I was running the 9.2 system with the 80.3 I was usually able to run close or at 82db ref. DEQ was not very important to me running on 82db......
Since it looked like Integra wasn't going to upgrade the 80.3 to 11 channels this year I decided to buy their 70.4 and just use the rear channels off it. As the 70.4 doesn't have any xlr connectors I had to change everything across to RCA cables to run my "new" 11.2 system and guess what happened....I could no longer play at reference 82db. Everything was so loud now I had to turn the volume down to 77db (5db lower than ref.) why I wondered, all I could think of was going from xlr to RCA. But what I did find my "oomph" from the bass too had dropped playing at a level of 77db. Turning on DEQ bought back that lost bass and was the "icing on the cake" with the new 11.2 setup.
The other thing I have no issues with is the surround boost that most speak of with DEQ engaged. I wonder if this is due to all my Klipsch THX surrounds being ceiling speakers, they are just that bit further away from you. With DEQ engaged my bass is spectacular and the surrounds are just a perfect level, its out of this world.
I don't work for Audyssey either.