Sometimes though TC, things are popular for a reason.
Not all cultural changes or ''progressions'' are for the better, nor do I particularly like them myself.
Confining myself to this thread or topic, as we should, I like the use of music and / or chants to enhance the sporting experience.
It may well have it's origins somewhat elsewhere (and be ''following'' in your definition).
Although as long ago as the 70's Australians were singing and chanting at sporting events.
Eg. C'mon Aussie c'mon c'mon is famous still in cricket. Indeed anything Australian, or for a sport like Rugby League is unique anyway...because it's defined differently than soccer in the UK, or American football, baseball or basketball.
So it may have some link to other cultures, it is still original as it's applied to us...in this case rugby league.
And many examples, even in this thread, are far more sophisticated, or clever, compared to Aussie Aussie Aussie Oi Oi Oi!
I actually agree with you up to a point, just not on the principle that chants and music enhance the game. For me (and many others as it happens) they do.
