And to further adress the “but what if I believe in My Little Pony would that count”, I mean… the spirit of the law does matter to the judges, you’d have to make a very strong case as to why you and your three friends should count as a protected “group” and why dismembering My Little Pony figurines is necessarily incitement against your group. I’m 99% sure no prosecutor would take you seriously. But I don’t know, I am not a legal practitioner. It’s up to the prosecutors to decide if a case seems to have merit, and then it’s up to the court to try what should and shouldn’t count as incitement under the law.
That's the issue. You now have a very vague law that is entirely up to interpretation by the judge on a case to case basis. Three people might not a religion make, but what about 300? 3000? Those numbers are easy to reach if you have any sort of decent organiser behind a cause. It's just extremely open to abuse. There is no reason why religions should be granted any sort of protected status under the law.