Earlier quoted context omitted.
The winning candidate won by something like negative three million votes. What other country would consider that a democratic outcome?
AFAIK basically all other democracies function this way - using voting districts - never using direct representation to elect representatives [1]. One similar example of this is the recent German election - I believe AFD had like ~10% of the popular vote, but only won 5% of seats in the parliament. [1] https://en.m.wikipedia.org/wiki/Direct_representation
In both countries there is a threshold (5% party votes) that a party must get to get party seats ... looking online in 2013 AFD (spit) got less than 5%, below the threshold, and got no seats, in the recent election they got above the threshold and were awarded 92 seats (14%) - seems to me that the system is working as designed.
But just because they got seats it doesn't mean that the other parties are required to stoop to form a government with them.
MMP is a far better system than the FPP system used in many other places, most people end up with someone they voted for representing them, unless they are in an extreme minority (<5%), and it's pretty immune to gerrymandering. Personally I'd argue for reducing the 5% threshold to the size of one seat so even more people are represented.