No

Will it be legal? Recently honey extension was caught doing this, though without user consent.

Even with user consent, would businesses work with firefox affiliate if it is not actually attracting sales, but taking a portion of sales, and thus reducing profit, just because the sale is made through the browser?

Firefox tried “privacy friendly ad” but that has also received community backslash because it turns users into products and doing anything like that would make their profit engine go boom and exploit private data. Wouldn’t the similar backslash also apply in affiliated sales?

Recent firefox policy change is controversial, but how brave is better?