Earlier quoted context omitted.
That's not a counterexample. That's an example of the short and defined list of prohibited axes of discrimination (the specific law at issue included sexual orientation as an enumerated category protected) discussed upthread in the US and contrasted with the Finnish rule against discrimination on any broad category. So, its not an example of the US having a rule like the Finnish open-ended rule.
What makes you think the Finnish law prohibits discrimination based on "any broad category"?
If you have questions about the basis for the claim about Finland, you should as the poster several posts upthread who made it.