This has me wondering if this could be cause for a class action lawsuit by influencers affiliated with Honey or by Consumers who installed the extension.
For the most part, it looks like consumers weren't directly harmed aside from the false promises about "finding the best deal," but consumers weren't paying anything to Honey for that promise.
The harmed parties, the referring affiliates whose links were overwritten, would have to argue that Honey, as a third party, tortiously interfered with them and the merchants paying the affiliate commissions. Third-party claims are challenging, especially when the merchants seem complicit.
Honey will likely try to cop out by claiming the affiliate only changes if the user clicks the button and thats intent.