John Gruber from Daring Fireball has already written his review: > “Next year it will work great” should be Bluetooth’s slogan. http://daringfireball.net/linked/2016/06/10/bluetooth-5
Isn't this a problem with anything wireless in general? WiFi is also plagued with connection issues, inexplicable dropouts, and slowdowns. With Bluetooth in particular it seems like there are a lot of poor implementations (if it's rock solid or buggy seems to have to do with which two devices you're using ) - maybe they would benefit from a more stringent conformity licensing process.
I'm not saying that setting up a WiFI network well is super easy, and there are definitely lots of things that can impact WiFi connectivity, but for it's ubiquity, I'd say WiFi works very well. In my three story townhouse with fibre and a decent router in the basement, I have none of the problems you describe.