But controversy in the US is similarly limited to a two-party dialog: everything in your political system (its discourse, its reporting, its policies) is geared towards this artifical (and often false) dichotomy.

In my view, it is the discourse that needs to be fixed first. As long as your media keeps painting everything in black and white (and it is in their interest to do so, being part of the establishment), I don't think any electoral reform is useful.

"All or nothing", it turns out, is really appealing to people. It may be toxic to a functioning democracy with a diverse population, but doesn't seem to lessen the appeal.

We are very good at pretending that when we get "nothing", it is a temporary inconvenience.

It's more like that we are good at accepting this system as long as we're not the ones getting 'nothing'.