LOL at "EU countries avoid those problems" - they all have those problems. From proportional thresholds to the sad joke that is first-past-the-post, all systems have issues here or there. Direct democracy doesn't really exist outside of rare referenda - which also have their own distortions, from eligibility criteria to quorum etc. Democracy is a set of compromises we make to live together in relative peace.

> to EU citizens moving to the American model is a huge step in an undemocratic direction.

No, it's a huge step towards a continent-size governance model, which inevitably requires new ways to interpret the popular will. We're still at the early stages of this process, a process that will probably never end - like it never ended for nation-size governments.