That is true, though imo Audyssey did the right thing not disabling it for the Audyssey off setting, in theory anyway. If you can't stand the overall EQ effects but still want to use DEQ, the best you can do is to leave Audyssey on but select L/R bypass. As for the surround effects, again, DEQ compensates the low frequency and surround effects according to their target curve to match some sort of so called psychoacoustics effects.
Personal preference is naturally a subjective thing, DEQ does have a reference offset setting to suit different tastes and film mixed, including obviously the "off" setting. Instead of turning it off you may also try reference offset -10 to see if you like it better.
https://en.wikipedia.org/wiki/Loudness