Of course this is not to discuss the value of it, I get that, have used it and teach it.
But something Funakoshi Sensei said, page 31 To-Te Jitsu book, orig published 1922 this is taken from the Shingo Ishida translation, Masters Publication 1997 (I think!).
'In both kata and actual contest, defense always precedes the offense in any situation. In addition, for every instance of defense, one must follow and connect with some kind of offense. If retaliation does not follow after defending oneself, then he is essentially the same as a 'hitting board'.
He then goes on to explain about 'hente', which I understand is 'changing' hand, i.e the ability to attck with what was the defending hand- or indeed the reverse in th same motion etc.
Anyhow this will be interesting to discuss, just where are the pre-emptive strikes in classical kata? Are they simply assumed (I think so),