They literally advertise this as a feature on their home page in that they give you X% of what they earn from affiliate links. It says a lot about the influencers advertising it if they did not realise that Honey is taking their affiliate revenue while reading an ad that says they do. More realistically, most of them likely did know that this is what Honey does and determined that honey paid more than any lost revenue, but know that saying that would lead to some of this outrage being directed at them. As a bonus, by asking users to uninstall Honey they can have their money from running Honey ads previously and money from their affiliate links too. The only way I can maybe see influencers being unaware of this if if they read an ad that only talked about the coupon feature and they never bothered to even visit the Honey homepage or try it themselves, which would be a pretty bad look for them.

I also think most users that use Honey have to know that this is what it does given that, again, it's an advertised feature. I suspect most people outraged at this are people that never used the tool in the first place.

I certainly think it's a bad product as it defeats the purpose of affiliate links and reduces revenue for anyone using affiliate links for their intended purpose, but I don't think they were misleading anyone about what the product does.