This site has the cookie permissions dialog which has "reject all", but I think this rejects only the "opt-in" cookies.
The "legitimate interest" cookies, which are equally comprehensive but are on a different tab, are not rejected by this, and to reject them you have to turn each one of them off by hand, scrolling down a massive list.
If you select "reject all", the dialog instantly closes, I think with the legitimate interest cookies all in use - but I can't check, because I know of no way to get the dialog back up again, which is why I'm saying "I think".
When sites pop this one up, I leave - and notably, The Register, the UK news site, started using it a year or so ago.