I sort of get what you're saying, later punk did get a bit like that, having said that you've described one of my favourite bands, The Ramones, 4 barre chords and the title of the song sung (not shouted) 4 times, I don't know what made them special, but something indefinable did.
I won't be going, I've been a few times and didn't particularly enjoy it, it's just too big, too many bands, dodgy sound.
Apart from the odd exception, it just all merges into a mushy mess, for me anyway.
Last time I went I spent most of my time in the pub round the corner 😃