First thing, some translated interviews sometimes have some wording or descriptions that get lost in translation, no pun intended :P.
I think it was like that for Nintendo in general since all of, with the exception of some like those at Retro Studios, their developers speak Japanese.
Source Gaming has done a lot in translating Sakurai's interviews and Famitsu columns to make sure his words are not twisted or misunderstood.
I think Sakurai doesn't mind competitive Smash, or at least the one that we are accustomed to. He even made a few appearances in Japanese Smash 4 tournaments that had some of the best players in the world. He just takes a lot of things into consideration, including the more casual crowd. That's part of his philosophy. That's partly how he built the concept of Kirby. He's built his philosophy with influences from the likes of Satoru Iwata and Shigeru Miyamoto.
Heck, for those who don't know, he's a gaming nerd himself. He's played hundreds of games throughout his life, even games not on Nintendo consoles. If he hated competition, he wouldn't have had influence from Street Fighter or King of Fighters to create Smash Bros.