Yes, it is his opinion, but it's his opinion
for a reason. I think I asked this question earlier, but no one bit:
why do you think that that opening move is a block? You learned it as a block. But the
name of the movement in Japanese,
gedan uke,
does not mean block¡ªuke refers to 'receiving', and 'reception' is probably a far more accurate translation. So why do we use the label 'block' for that 'reception'? Because modern karate labels go back to Anko Itosu and his program, in the first decade of the twentieth century, to get the Okinawan school authorities to accept karate as part of the physical education component in the elementary school curriculum. Part of his success in doing so was removing the harsh 'adult' techs from the syllabus, but as he himself tells us in his 'Precepts', the adult's karate should not follow the children's version. As Abernethy observes,
It is important to remember that many of the names given to kata movements have no link with the application of that movement. Terms such as 'rising block' or 'outer block' stem from the watered-down karate taught to Okinawan school children, and not the highly potent fighting art taught to adults... The traditional practice had been to learn the kata and when it was of a sufficient standard (and the student had gained the master's trust) the applications would be taught. However, it now became the norm to teach the kata for their own sake and the applications might never be taught (as is sadly still the case in the majority of karate schools today
(
Bunkai-Jutsu, p. 11). I mentioned earlier that Higaki in his book on the bunkai for the Pinan kata shows a photo of Funakoshi doing the double block that begins Pinan Shodan¡ªexcept that the 'outward middle block' is being applied as a no-nonsense
throat/jaw strike! And if you break a 'down block' into its basic parts, you see right off the bat that it consists of a rising elbow strike, followed by a spearing strike by the same elbow and a downward hammer fist. To answer your question, what if the attack is always on an attacker's trapped grabbing or striking limb, and the elbow is a counterattack on their pinned arm, or head? Rather more effective, by far, than the passive block that depends completely on your attacker cooperating with you and standing there after the 'block' to allow you to deliver your lunge punch or whatever!
The children's version of karate that Itosu taught was not intended for combat. Itosu stressed the point¡ªbut he also warned adults that the karate
they were doing was intended for use, and he didn't mean sparring of the contemporary sport variety. The last thing he would have wanted would be for us adult practitioners to follow a schoolchild's curriculum and use of what for him and his contemporaries was a severely practical combat art.