There are, of course, limits to your point: if Apple delivered a publicly available beta with a non-functioning keyboard or always completely purple screen, it would look pretty dumb. The GPS issue isn’t as extreme as those examples, but is certainly farther out the spectrum than, say, an occasionally misfiring haptic feedback function. The question is: how far out the spectrum does an issue need to be before Apple elects not to ship a beta build. Some of us have argued that really wonky GPS, for want of a better description, may be far enough due to potential life-safety concerns. Apple chose differently and hopefully had good reasons for doing so.