I don't totally buy that -- that they're in charge of the integration with Etsy's catalog? That there's no device ID fed back from the referrer links I click th

I don't totally buy that -- that they're in charge of the integration with Etsy's catalog? That there's no device ID fed back from the referrer links I click that Etsy could be using to pull over my computed advertisement characteristics, given that I've logged in there with Facebook? Etsy knows I've been clicking on those Instagram ads run to certain groups -- surely they could use that to improve my onsite recommendations.