> Telegram to temporarily refuse data requests from Hong Kong courts amid security law

The headline you linked makes it clear it was temporary. Which mean they do of course cooperate in normal situation. Otherwise they would be blocked everywhere, you cannot maintain a service such as a chat application without cooperating with governments.

There is no story here, Telegram shared information with BKA in cases of terrorism and child abuse, as every service operating in Germany would and should do.

It’s easy to refuse requests from Chinese law enforcement if you don’t have offices, employees, or assets in China. Meanwhile, European countries recognize the legitimacy of each other’s court systems and will enforce judgments and orders across borders.