My wife and I don't get ground beef from supermarkets, but from a local butcher-shop. When ground beef is on sale, she'll buy a lot and we'll repackage it and put in in our chest freezers. These are very cold freezers, not self-defrosting compartments in a refrigerator/freezer combo, so that might make a difference. We don't have any problems with burger-patties falling apart during cooking.
Before the local butcher shop opened up, we did have problems with frozen or re-frozen, re-packaged beef falling apart and sometimes even had to resort to using eggs as a binder when making patties. I like my patties thick (and rare in the center) and that is very hard to achieve when your patties crack or break.