I would expect that a Dutch organizations will not just give personal information if you didn't do anything wrong by Dutch Law. At least the owner won't be forced to by the state. The Turkish government would have to come with things that are illegal in the Netherlands as well.

But I would be careful with sharing identifying information, if your government really thinks criticizing them on Lemmy would be enough to go after you. Of course, everyone will try to prevent it, but nobody can guarantee that there will never be a vulnerability that allows them to hack data from a Lemmy instance. But I doubt they will ever find it valuable enough to actually try that.