All it really tells me is that you shouldnt have this mindset when we have absolutely idea how link plays in smash 4, you guys are just assuming that its just brawl link but in smash 4, I hohgly doubt thats how it works, saying sakurai doesnt understand whats happening with this link that he is currently working on is naive.
Link has changed very little across each installment. He has the same relative move set and attributes within each Smash game. He's slow, has a terrible recovery, and has little options to escape pressure on his shield. All these traits are in each Smash game for Link. His only strengths lie in his projectiles, his average ability to combo, his decent range, and his KO options.
All those strengths were practically nullified, in Brawl by the engine changes alone. Coupled with some modifications to how strong/weak some of his moves are and also how the boomerang and Up B worked, he was made an even
worse character than he already was.
This Dair change shows to me Sakurai (and his team) don't have a clear understanding of what Link's (current) move set's strengths are and what problems he suffers. Unless Sakurai has buffed the character's speed (which isn't something I expect because for the past
3 games he's intentionally kept him slow and now with Toon Link existing again there
has to be a speed difference) or the engine changes in Smash 4 restore some of what he lost in Brawl, then I have no reason to believe or have any potential faith Sakurai will actually "fix" Link.
I'm not being naive by looking at the past three installments, while also already being shown his move set is roughly the same thing again from screens and the limited footage we have to claim that he doesn't know how to buff Link. And that this shows to not have any expectations for there to be actual balance,
again.
Basically, I have low expectations and this pic of the day reinforced my low expectations. It's possible he's done other changes to Link, but
this one is not a good example of showing he has
any understanding of what Link's problems have always been.