An interesting ruling. But I suspect it will be impossible to enforce, even for sites within the EU. There are just too many ways of detecting/thwarting an ad blocker.
And there is an obvious loophole - just design your site so the ad blocker is tricked into blocking the content as well as the ads. Maybe by using anonymised/proxy urls for both the adverts & content, so the two are virtually indistinguishable.
It would be extremely hard to class this as detection, but the result is the same. Visitors will still have to disable their ad blockers to see anything of value. However if they don’t, rather than seeing a message asking them to disable it they’ll just see a broken web site.