[AdrianoKF]

I was actually wondering if the driving factor is legal documents. ID cards show names in all-caps letters, which creates the dilemma that your ID might not show your actual name (notwithstanding international standards for travel documents that prescribe transliteration of non-latin characters; see ICAO Doc 9303 Part 3, section 6 [0] for examples)

[0]: https://www.icao.int/publications/Documents/9303_p3_cons_en....

[gumby]

That’s a good theory, especially as section 3.1 of that ICAO document explicitly permits the use of ß.

Bringing the thread back to the topic of this comment section: the ICAO document also calls the digits 0123456789 “Arabic” even though their shapes are closer to the original Hindi (Devanagari) forms than to actual Arabic digits — another “Hindi/Turkey” situation