[SuperNinKenDo]

I think a whitelist that covers more than English would be the way to go. You could even set up maintainers for each block or something.

I don't think it's ideological in any "conscious" sense, however there is an argument to be made about ideology being the water the fish swims in.

Also I know I said ASCII as a shorthand and because that's often something that developers say, but it's quite possible these "Latin" characters aren't pure ASCII but may include extended Latin sets like Latin-1 and the like, which might cover the Polish case.

Again though, I think that you could have a system where you have maintainers for different blocks to audit them for whitespace or other deceptive characters and that could work fine.