Should it be in the Olympics and is it a sport are arguably different thresholds.
Breakdancing not being a sport is not particularly contentious I don’t think.Dance competition yes, sport no. There are plenty of other pursuits I’d also classify as not a sport – Darts, Snooker, shooting would not make it if I ruled the world. I’m also no fan of any sport watched on TV where the commentators are not able to tell you almost instantaneously if what you have just watched has won or not and are frequently shocked when the results comes out. Boxing, diving, all the various snow/ice fannying about sports etc.
There are also sports/pursuits that I think loose their purity and appeal when they are engineered into competitive events – I’ll start with surfing and climbing.
The Olympic Games – I think of it as an international festival of competition now rather than sporting event. You dip in an out as you wish. I’d like to see the medal tables the media like to shove up removed – they give some sort of illusion that the individual events have some sort of equity. Just take each event in isolation and either enjoy it or flip over to one you do. My only caveat for inclusion is that an Olympic gold is the highest accolade attainable in that event – if it isn’t you don’t merit a slot.