EQ can not fix, correct, or eliminate room nodes the nodes will always be there all you will do is add distortion and an even more uneven net frequency response plot.
clearthink (George hifi’s alt?? ) and Millercarbon lack education and personal experience in a home or professional environment with this, so their opinions are incorrect. Fortunately I have personal, home and professional experience in the motion picture industry as well as I am guided by acousticians who have written on the subject.
They’ve also failed to read multiple postings I’ve made citing appropriate links. They are guided completely by feels.
I’ll summarize my position, guided by hands on measurement, listening and acoustics:
You can use an EQ to clip resonant modes. This allows the overall subwoofer level to be lifted.
With bass traps, you can even solve nulls.
Miller is, as always, flat out, laughably wrong. He and george number 9 will never know it though. The rest of it is so riddled with half truths and falsehoods it’s not worth attempting to dissect.