Noise from the Equalizer is mostly when turning, the tighter the curve, the more noise you get. And if it's wet, the noise seems worse.
One time in WY we missed our turn and made a big U-turn in the parking lot of a vet's office (closed, because it was Sunday.) That hitch made a big groan.... we joked that the vet was going to come out and offer to euthanize our dying cow, because that's what the hitch sounded like!
Seriously, the noise is rarely a problem. Once the bars get a little wear on them it decreases greatly. If you are moving slowly in a campground, you can always stop and take the bars off.