My 4x4 Infantry flag is very fragile, you are absolutely correct, the weight of the embroidery can tear the silk if not handled carefully.
My first flag was a Prussian Line Infantry white .
I think from the late flag collector Ben Weed (Old Flags Wanted)
via S. Wolfe
mine had been "netted" but not by the Germans
mine was like a fine fabric similar to ladies stockings if any ladies still wear them
the flag had been sent off for cleaning by an expert
somewhere I have a photo of the flag in a 4 X 4 with the cleaning solution
after that the flag was in great condition