For me it is a real Sport and don't just attempt to be one. Its a Question how you define Sport as a term. Sport isnt just movement, using your Body, work out. Sport is always competition on high levels and casual fun on low levels.
If you dont define Sport that way Chess or racing wouldnt be accepted as Sports.
I think competitive and sport as terms can be handled equaly but gaming tends to be not that seriuos as eSports is nowadays. With all this huuuuge Competitions, Legaues, Tournements, Pro-Teams organizied with Managers, Sponsors (one of the biggest things) and thos insane Pricemoneys.
eSports is way to professional as to be called "just" competitive gaming the only Problem is, that its even with thos sponsors and huge privemoneys and media still in a little Bubble and isnt breakin through to be viewed by a broad publicum. For that thoose events like the TEDx talk are good for. Also I think that its a matter of Time, most big sports like Baseball, Football , american Football (not to say Egghand ) are really old.
When we all grow older and introduce more and mroe friends and later on kids to it the scene will become bigger automatically.