Ron
First, the use of all capital letters is super annoying to lots of folks, myself included, so no more replies from me until you shut that cap lock off. I'd rather see NO caps than ALL caps.

YES, I have seen 2 of these 210 chassis (not 610 chassis) car rip off the upper spring mount. iirc they were both V8 cars, I think they were both E420 210 chassis with the M119 motor V8.
I have seen the Diesels burn out front wheel bearings though, seem 3 or 4 Diesels do that, but not the spring mounts.
The 190E (201 chassis cars) are kind of known to have the front spring mounts rust off and break up here in the rust belt as well, but with the 210 chassis, i never seen any rust involved, just simply tear off, like yours.

Gilly