Wrongly dropping accents on uppercase letters predates computer keyboards; the French azerty layout puts accented letters on the first level of number row:
> That button to the right of the P that contains four different forms of dashes is... interesting.
And there are two more on the 8 key.
I like the mac international keyboard layout, but it still only provides for 4 of those: the non-breaking hyphen and the "proper" minus sign are lacking.
I like that the "new azerty" provides for pretty much every diacritic, even those which are not in use in french.
http://j.poitou.free.fr/pro/img/tkn/tw-image.jpg
This idiocy carried over. The recent layout update makes dead accents more accessible:
https://norme-azerty.fr/
But I haven't seen much adoption yet.