Hbox is, for the most part right, but how the message was delivered was poor, mostly because SnS3 was the first major he's won in 6+ months. Nintendo is missing out on a lot of consumer good will by ignoring many of its fan communities. Whether it's Melee or speedrunning there are opportunities out there to improve customer loyalty and brand awareness that they are not capitalizing on.
Also Melee HD with online play would be a cheap and easy port that would absolutely move enough units to generate lots of revenue, would discourage people interested in joining the scene via netplay from pirating the game, and would not substantially cannabalize Smash 4 Deluxe sales given how drastically different the games are, in terms of content, gameplay, and polish. Do they need to support the Smash community? No, and Smash will be just fine without support from them, but they are leaving money and good will on the table by only being involved, in the most minor way, in Evo.