It's so bad that I installed Gboard instead recently (never was an Android fan, but used it for a while). But I'm not sure if it's better, e.g. typing code snippets on it is pain.
And there is a little detail in this that I'm questioning my sanity sometimes. The "fact" is that maybe iOS changed the detection point of a tap at some old release, because I was able to type perfectly on iOS 4..6, but then with 7 suddenly started to make typos everywhere. On Gboard now I can't type few words without making a mistake in every one of them. As if it was made to show me that I'm unable to type and need it so bad.