Sure maybe for something like Brawl, but Ultimate has many new and changed things targeted at the competitive smash community. (Custom online rulesets, Battlefield style Omegas, Character Balance, Hazard Switch, etc) Smash Ultimate shows that the devs do consider the competitive players part of the community now. Why else would they invite well known competitive players and commentators to play the game at E3?
Also just because a game is played and celebrated in a way the devs didn't intend in a case like melee, it does not mean that the community is playing the game wrong. Not to mention the game gives you the customizability to set up matches however you prefer. Stock, stamina or time? Items on/off? Etc. The competitive players are just as passionate as any other fan, many are or have become hardcore nintendo fans because of their love of playing the game. For Example, Zero is considered one of the best Smash 4 players, yet he streams playing Smash casually along with other games.
There really shouldn't be a divide in the community like this, just because people play a game a different way then someone else.