Batteries get old. I'm not sure what Apple can do about that.
They could build longer lasting batteries. Load testing your product is manufacturing 101
That wasn't the issue...
Uh, yeah it was. Older batteries couldn't support the peak power draw, so Apple responded by throttling the CPU if necessary. Unless you have something to share?
Look back through the issue. People started getting throttled within the first year when they still have 90+ percent capacity left. That's not an "older" battery.
Citation? Apple's official statements seem to correspond to anecdata that the problems went away after a battery replacement.
reddit.com
I'm going to buy anecdata that backs up a reasonable explanation from Apple over anecdata alone.