I imagine the retailer just cares about getting the sale and doesn't really care who they pay the 2% (or whatever) commission fee to? Shouldn't make too much of a difference whether they pay the commission to Honey or to some random blog.
It certainly sucks for the blogs and websites trying to fund their content with affiliate links though. Someone like Wirecutter can spend time and money on reviewing items and then can lose out on the referral commission in the end.