I'm gonna sound like an asshole for saying this, put I don't think Sakurai is as good as people make him out to be when they cite stuff like him winning a 100 man tournament and stuff like this. First of all, in the stone age of the internet, there really is no record of really old tournaments because they really didn't reach as much people like today. Japan also liked single elimination tournaments, so he probably only needed to face like 5-7 opponents, since there are no losers brackets. Not only that but scrub mentality was pretty prevalent within back then, stuff like tick throws and fireballs being cheap, and the fact that the genre being young had the base fundamentals of a player much weaker since they didn't understand the game as well (when a game comes out today, information about "tech" and the ins and outs of a character spread extremely fast. It takes much less time to "explore" a competitive game today than it was before). Not saying that any scrub would win an SF2 tournament back in the day, but I think SF2 tournament players will have less understanding of the game than something like modern day ST players for obvious reasons.
If you play a lot of fighting games, you will always face many players who are not up to your skill level. The people who play a lot will always run into situations where they might be facing someone who is new to the game, and after beating them, they shrug and move on. Hell it happens to Daigo Umehara a lot in exhibitions like this kid
Why would 1 event like this really stick with him so much? It's like dime a dozen that your run into newbies in the lifespan of a game. And it's not like landing Zanretsuken is an amazing achievement with Ryo. But I digress, no matter how much someone has accomplished in a tournament, it really has no bearing on what their skills are as a game designer, and in a way, I I think these comments were made when people questioned him on balance, but it really is sort of irrelevant (A lot of good fighting game players today don't necessarily have the best opinions on game balance when they are asked, everyone always has some form of bias in these things).