You are just rationalizing a deeply undemocratic process. These are the exact self-serving arguments that the winners make to legitimize a fundamendally unpopular government.

Also, in practice, no, you cannot make a political party in Greece. There's a country-wide threshold of 3% that you need to exceed to get into the parliament. A lot of well-organized parties struggle (and often fail) to exceed it. So even if you get 100% in an electoral district, you won't get its respective parliament seats. In fact (IIRC the tidbits of the election law), you will be making the first party stronger (and I don't mean by depriving votes from the second party).

This is not unlike other Western democracies. But this is essentially a design to cull any grassroot movements. Not very democratic.

Which is still distinct from actively choosing something. Indifference is not the same active approval, precisely because it goes both ways. So it is still incorrect to state that "they chose that". They chose indifference.

One can still fault them of course, but it is a distinct category, and it is not at all a clear sign of consent, if even the active choice ever was.

> Low turnout means non-voters [...] find no palpable option on the ballot sheet.

That alone is pretty un-democratic, no? Certainly politics is a world where it's hard to find an ideal situation pretty much ever, but I think a democracy where a third or more of eligible voters don't want to support any available candidate... that doesn't sound particularly democratic.

The US with its two-party system suffers from this problem, and it's a very bad one. There were more eligible voters in our 2024 presidential election that didn't vote at all (89M) than there were people who voted for Trump (77M) or Harris (73M). It's pretty messed up that more than a third of the electorate was so dissatisfied with their options that they didn't cast a ballot at all.