b3 isn't a waste of time against the other systems though. against every other system it is fine, just not mine.
therefore, i think Bronstein , Rubinstein , Capablanca , Shlechter, Nimzowitch,Alekhine played b3 only when their opponent didn't use this sytem. for example d4 d5 nf3 c5, those legends would already opt for something like dxc or c4.
Let's see...................hmmmm............found something.
In the next game a "fool" uses Rubinstei attack to win another "fool" in just 28 moves.