That's two different points glued together to make one invalid point.
For instance I could say "there's no country in the world that caber tossing is a bigger sport than in Scotland". Which is true. But that doesn't make it any less of a minority sport.
It all depends on what you mean by 'minority'. F1 draws millions of viewers but there's only around a handful of drivers taking part in the whole sport.
Tennis or golf only has say a few thousand professional players world wide but there's not a sport shop in the world that doesn't sell the equipment to play those sports which makes it accessable to millions.
So is a minority sport defined by the number of spectators or those taking part?
For me, when I hear the term 'minority sport' I'm sure it's more to do with money or class system rather than anything else. Rugby fans get a reputation for being prawn sandwich eaters, most of those fans who watch it don't play the game. Does that make it a minority sport? No, of course it doesn't. Polo on the otherhand..... minority sport because it's only accessable by the upper class?