Axel Springer says that ad blockers threaten its revenue generation model and frames website execution inside web browsers as a copyright violation.

This is grounded in the assertion that a website’s HTML/CSS is a protected computer program that an ad blocker intervenes in the in-memory execution structures (DOM, CSSOM, rendering tree), this constituting unlawful reproduction and modification.

This is complete bullshit thought up by people who have no idea how computers work. It's basically the failed youtube-dl DMCA takedown all over again. The (final?) ruling basically said that website owners cannot tell people how to read their websites.

BTW, Axel Springer products are the equivalent of FOX in America and they are often embroiled in lawsuits against them. Just saying.