HN headline is click-bait. The article's headline is: "Axel Springer vs. Eyeo: OLG Köln stated business model of AdBlock Plus unlawful".

So this only concerns Eyeo and its "pay us, or nobody will see your ads" business model. Adblocking is legal. Even using ABP is legal.

Much ado about nothing, unless you're Eyeo.

Edit: This isn't even about adblocking, but about anti-competitive behavior: https://translate.google.com/translate?sl=de&tl=en&u=https%3...

The lawsuit has been going on since at least 2014. Here are some comments by a German lawyer on it: https://translate.google.com/translate?sl=de&tl=en&u=http%3A...