Problem being, when one voter every 5 supports a party, it’s not that simple as you’re basically saying 20% of your entire population is unfit according to the constitution.
But it’s true! Which make’s the whole thing fucking dangerous. That’s exactly the reason the constitution does have articles in it meant to combat this very thing.
It may be a cynical argument but… People who wrote Grundgesetz doesn’t need to be elected anymore, people who does politics today, instead, needs to.
We live in a democracy, at the very end, the electorate is the true final judge.
https://en.wikipedia.org/wiki/Entrenched_clause#Germany
Germany’s constitution protects certain parts from changed through regular legislation. This was done specifically to prohibit the rise of authoritarian governments.