The first page is shows you with the "reject all" is only for the page of options you're on to start with - the "legitimate uses" page has a ton of stuff opted-in by default, and to turn those off, you have to click on every company, one by one.

Also, once you've hit "reject all", I can find no way to get that permissions dialog back again.

It's a deliberate UI approach to trick you into accepting a ton of cookies without knowing you've done so.