Sakurai has his own motives and cares very little about what we think.
If Sakurai didn't care about what the fans think... he wouldn't have added:
Villager... many fans have been requesting for a playable characters from the Animal Crossing series for years
Mega Man.... do I need to say more?
Little Mac... fans in the Weat have been requesting for Little Mac for many years
Mii Fighters... while hardcore Smash fans were against them, the sheer numbers of casual Nintendo fans trumps them... and they are the ones who are most hyped about playing as themselves, their relatives, their friends, celebrities, politicians, etc.
Palutena... she was heavily requested after Uprising
Pac-Man... same reasons as Miis... he's that famous
Robin and Lucina... Smash fans wanted an unique Fire Emblem character, one who isn't a bland swordfighter which is why Chrom isn't in... and Fire Emblem fans are happy with them
Bowser Jr.... fans of the Mario series were requesting for him since his debut
Shulk... the success of Operation Rainfall is why the West has Xenoblade Chronicles in the first place... Sakurai knows there's an overlap between Operation Rainfall supporters and Smash fans
Duck Hunt Dog... love him or hate him, fans in the West were clamoring for Duck Hunt Dog to be in Smash for years
Female newcomers... a common complaint among the entire Smash fanbase was how we only had three females (Samus, Peach, and Zelda) in the first three games... Sakurai delievered with female Villagers, female Wii Fit Trainer, female Miis, female Robin, Rosalina, Palutena, and Lucina... now people cannot really complain about the lack of females in SSB5.
I don't know why you think that Sakurai doesn't listen to the fans when evidence says he does.