An important thing to remember with cartridge brass is that firing hot loads doesn't weaken it - it actually makes the brass harder, through work hardening. Dimensional changes can occur (such as enlarging primer pockets) that make it unuseable for reloading, but that doesn't mean it got weaker or is somehow a safety concern. (Excess headspace is different, and does weaken brass by stretching, which necks down the case walls and excessively work hardening the stretched area making it prone to cracking.)
If the brass still holds primers tightly, and you don't continue using excessively hot loads, you can expect to still get good life out of it. If it was soft brass to start with and won't hold primers now, it's junk anyway so the discussion doesn't matter.