Funny but this is probably a better format for government agencies, or any significantly large organization really. If I'm understanding how this works correctly they can host their own instances they 100% control instead of being at the whims of some random tech bros.
Interesting. I have a Samsung A3 and both 1:1 and 'Full' crop, 3:4 is the one that doesn't. Luckily I think 3:4 is the default on the camera because I don't remember changing it. The safest thing is probably to just look up your phones specs tbh.