It also caught my eye that their TOS didn't allow users a choice in data sharing, it was either agree or don't use the app. That might have some wide ramifications, I've encountered many web sites that won't let you past the sharing opt-in until you click agree - i.e. it is impossible to disagree. It is a completely foreign concept for US companies.
Wikipedia says Grindr is based in California, US. I wonder if they will pay the fine or refuse. If they have no assets in Norway I imagine it may be hard to collect from them.