If a company says they make money “selling cars” you don’t assume they get those cars through theft. Same deal here, saying they get affiliate money doesn’t imply they overwrite existing affiliate links which is about a clear a case of tortious interference as you could find. https://en.wikipedia.org/wiki/Tortious_interference
So, no Honey didn’t disclose what people are complaining about.
I agree that it's likely tortious interference, I just don't agree that they're being deceptive. I think it's reasonable to say that most of the target market would be considered tech-savvy enough to know how these purchase affiliate programs work and the influencers advertising it absolutely do.
If users are not aware of how this works then I have to question where they think the cashback comes from, and if they are aware that it comes from the business they are making a purchase from then I have to question why they think the business would give a commission to Honey on top of the existing commission to wherever a link was clicked from. I think a majority of users would have to be somewhat wilfully ignorant to not question why money is being given back to them whenever they make a purchase.
I would posit that the "average user" has no care about how the companies they interact with make their money. The modern world is filled with black boxes to them.
So, no Honey didn’t disclose what people are complaining about.