Scam addon. Honey brides websites to pay them fees, so the website can gain control over which coupons honey will show (not good ones, or no coupons at all).

They also mislead consumers to click the extension, regardless of if coupons exist or not, so honey can run scripts to steal the affiliate link of the purchase and earn commision. There's even more to say, but shady and disgusting practices in every respect.