Yes, they do it wrong because (1) they don't know better and (2) they let their software convert lower case text into upper case (a feature nearly every typographic software provides). Yet, if we let the majority of illiterate people decide what's right and what's wrong we could as easily decide to have 2 + 2 = 5. Here's an official text of the correct today's rules on how to write a capital "ß" (it's in German): http://www.duden.de/sprachwissen/rechtschreibregeln/doppel-s-und-scharfes-s
📔 In Dokumenten kann bei Namen aus Gründen der Eindeutigkeit auch bei Großbuchstaben das ß verwendet werden.
Für den im internationalen Standard-Zeichensatz „Unicode" (ISO/IEC 10646) verzeichneten Großbuchstaben für das ß gibt es derzeit noch keine allgemein verwendete Schriftform. Er ist nicht Gegenstand der amtlichen Rechtschreibregelung.
- HEINZ GROßE
The last line (bullet), placed somewhat ambiguously, is intended
as example to the first paragraph cited here and shows the small
ß being used for ALL-CAPS names, because for names one can
never predict the original spelling (for words, except in the
small number of minimal pairs) it's generally possible for the
human reader.
The translation of the second paragraph is:
       For capital letter for the sharp s listed in the international standard character set "Unicode" (ISO / IEC 10646)For the international standard character set "Unicode" (ISO / IEC 10646) registered capitals for the SS, there are currently no commonly used in writing. It is not part of the official spelling rules.
                                                                                                         --- Google Translate
or
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