Fighting the uphill battle yet again. And yet again, this is gonna fail because many, if not most websites will either ignore it completely or find a workaround to keep selling your data. After all, what are they gonna do, sue every company that does this? Not to mention that Do Not Track is already a thing, and it doesn’t work because any site that relies on ads for money isn’t gonna stop tracking you just because you asked nicely, and the ones that do are already more respecting of user privacy anyway.
Given the historical record on attempts at Mercosur-EU trade deals, this is likely to fail yet again, since the EU’s agricultural voting bloc (mostly in France and Italy) doesn’t really want the market to be populated by cheaper products from abroad (at least not any more than it already is). But at this point, given the several ongoing food crises that Russia’s invasion of Ukraine caused, the chances for a successful agreement are about as high as they can go, so they might as well go for it.