[danhor]

> But this is the problem. It means that a party being illegal isn't such a big deal in and of itself.

Yes, this is what the constitutional court decided.

> If some party is illegal for whatever reason, it should be banned right away.

It should be hard (and is very hard) to ban a party. Thus if every party illegal should be banned right away, a large amount of effort would need to go into banning by the highest legislative and judicial bodies in the nation. It's furthermore quite hard to definitively establish a party as such, which further makes such things much slower (calls to ban the AfD have been happening for more than a decade now).