What a dumb mentality to have. Sakurai's anti-competitive one that is.
It's not like having a competitive aspect precludes still being able to have a huge casual audience, Smash itself being a prime example. Including a deeper element not everyone is aware of doesn't mitigate the fun of the more surface qualities of Smash. Even if it was formed unintentionally, refusing to foster a dedicated, loyal, and passionate subset of the fanbase simply because it conflicts with an ideology of "how" to enjoy the game treads precariously close to anti-consumerism. And that's coming from someone who doesn't consider herself a "competitive Smasher".
Thankfully Nintendo does seem to be embracing the competitive community more these days.