

It’s a political necessity really. If you keep denying the losing party any influence, they’ll grow bigger.
The Danish political system has very successfully stopped the far right parties by acknowledging their concerns and bringing some but not all of their policies into the centrist parties. Honestly this is probably much better than the alternative of the far right parties getting more and more influence.
EDIT: If you’re not Danish and not familiar with our (very successful, I might add) democratic political system, you might not understand, but it has worked quite effectively here. Keep in mind the Danish political leaning is quite leftist already, so even some of our “right-wing” parties are still quite left wing all things considered.
To be fair, 80% of voters did not vote for AfD - and if 80% of voters want to ban a party? Well, that is democracy. Although it’s a dangerous tool to use.
The US is way more fucked, as more people actually voted for Trump than not.