This might just be the last straw. My family has been on Aetna for several years now, despite their dumpster fire of a website and the unmanaged mess they call member services, they're still often the best option we have available.
If they subsidized fitness trackers generally, or even offered an Android and iOS option, it would be great. However, partnering with Apple to exclusively subsidize Apple products is extremely offensive.
Thankfully they announced this just before open season, let the exodus begin.