My friend wad telling me that if you follow someone on Insta who has an affiliate link for Amazon and you click it, it leaves a cookie on your phone so if you then purchase something completely unrelated from Amazon within that month the influencer gets a fee. Even if they haven't recommended the product. These days most influencer have links for every single website which is frequently used - Amazon, top shop, hm, zara etc etc.
I don't mind them getting a fee if I purchase something they recommend but not if I buy something unrelated. Aibu in thinking this?