("Lingua Franca" referred to French, the one-time international language, in Latin, the previous international language.)
There can only be one unitary global standard. If you've got a suggestion for an alternative typographic system which is widely known, widely supported, unambiguous, and enables the greatest number of people worldwide be able to avoid malware or other hostile content, feel free to suggest it.
Unknown-text and homoglyph attacks are both concerns.
Oh: and a universal language is highly likely to be associated with a dominant power (or prior one). As with French and Latin previously. You'll find similar patterns in other parts of the world prior to the modern era.
@calcifer@dredmorbius@inata Also as a URL, you get "non-weirdness" for free, the second with % escapes. It may not be nice to look at, but it round-trips correctly, and still correctly stores in obsolete 7-bit ASCII database fields.