Comment by mrweasel
There was a whole special interest group set up to handle the law suites: https://ulovliglogning.dk/ all the law suites are on their page, but in Danish. One of the previous ministers of justice flat said he didn't care, as long as it help catch "the bad guys". This a guy who was the leader of the Conservatives. A party that brands itself as the party of law and justice, except when they don't like the verdicts apparently.
You can also read about the reaction to the verdict in 2017 (again in Danish): https://www.version2.dk/artikel/bombe-under-ti-aars-dansk-te... where the EU deems the Danish logging unlawful, and the police and the government reacts by ignoring the verdict and wanting even more logging. There is a bunch of followup and related links at the bottom. The site is a tech news site owned by the Danish Engineers Union.
There's a Wikipedia page on what is being logged and retained: https://en.wikipedia.org/wiki/Data_retention#Denmark
It's somewhere between an over-interpretation of EU rules and a misunderstand of the usefulness of the collected data, but the end result is that every single person in Denmark is basically logged and tracked 24/7, unless they go completely offline.
Thanks so much!