As a Polish immigrant, I personally think "singular they" is worse, because it creates ambiguity where there doesn't need to be any... which makes things a bit more confusing. Meanwhile, I think my proposed alternative is native to most other languages, and should translate fairly easily.
I'm not sure I see the point in thinking this long and hard about pronouns, but to each his own.
Yes indeed, to each their own. The singular "they" can be confusing in certain cases, but that's not really a problem unique to "they". "He", "she", "it", "we", and "you" can all be confusing in relatively common circumstances.
But you're going to have to get used to the singular "they", because it seems to only be getting more common (historically, singular "they" was acceptable until the late 19th century, so the strictly plural "they" might be seen as a 20th century anomaly).
I'm not sure I see the point in thinking this long and hard about pronouns, but to each his own.