[0] E.g., of the iOS i-issue, he writes (https://daringfireball.net/linked/2017/11/07/ios-11-i), 'What I’ve heard is that this is a machine learning problem — that, more or less, for some reason the machine learning algorithm for autocorrect was learning something it never should have learned,' which is about the most lenient take one can have on the problem. I'm actually a little surprised that he hasn't posted that the impossibility of using the iOS calculator is deliberate, to force one to slow down and reflect.
I started with switching to Android, and I'm now typing this on an Asus running elementary OS after a regretful MacBook Pro buy.
They're not going anywhere, but their product are really starting to suck, and with those price tags that's unacceptable (at least to me).