Technically these are all still Latin leters, just that they're written in a weird way that evolved from middle-aged Gothic handwriting as opposed to Latin directly which was the case with English cursive. This style of writing, along with the print-oriented π£π―ππ¨π±π²π―, was abandoned for the Latin equivalent by the Nazis for logistical reasons in 1941.
I've had to read a few old German documents for personal genealogical research and good god, the handwritten words were hard to make out. Spent like 20 minutes just trying to read the phrase "ein und funfzig" (51, as in 1851). Someone else who'd read those documents completely misread them and listed his birthyear 20 years later than it should be, implying he was a 13 year old boy when he married a 30-something year old woman.
It's called SΓΌtterlin and had only been created in 1911 specifically for schools. The logistical reasons you mentioned were mostly related to the occupied territories where nobody could decipher German fonts. They wanted everyone to read their propaganda so they chose to adapt. A neat example of how little preserving traditions actually meant to them.
I actually learned SΓΌtterlin in school, not as the standard but as an alternative cursive.
I already hated cursive, having to learn another and on top of it outdated writing system was the first of many ways schools wasted time I have experienced.
Bisweilen wird jede
Form der deutschen Kur-
rentschrift als SΓΌtterlin-
schrift bezeichnet. Dies
liegt wohl daran, daΓ
die SΓΌtterlinschrift dieje-
nige Form der deutschen
Kurrentschrift ist, deren
Name am bekanntesten
ist. Trotzdem ist diese Be-
zeichnung unzutreffend,
denn es gab die deutsche
Kurrentschrift schon lan-
ge vor Ludwig SΓΌtter-
lin.
No actual document looked like the picture in the OP though. That picture is created by using handwritten letters as a font, you can clearly see the spaces between each letter while in reality the letters would connect much more smoothly, and that creates an even more indecipherable effect than it actually was.