> No, because FPTP only applies to the top ticket in America (i.e. the Electoral College). Down-ballot, third parties are vastly more competitive.
That doesnt match with the reality. In the USA our congress is almost entierly two parties.In fact you get third parties becoming president (those 8 examples I mentioned) **more often** then you get a third party in congress. But since congress has more people you will always have one or two in there while that is true.
The claim is that FPTP voting is why congress is a 2 party system just as much logic attempting to explain the presidency. Yet it only actually works that way in the USA.