They’re not yelling “Woooo!”, they’re yelling “Wooooce!”
There was actually an early 90s SNL skit that nailed it perfectly.
It was Kevin Nealon and Julia Sweeney as a couple together with another couple (I don’t remember who) at a concert. In the row right in front of the two couples, there was Melanie Hutsell who was up dancing and bopping around for the entire concert.
The line that sums up my feelings was, “She doesn’t understand, people at a concert collectively decide whether they should be standing and dancing or sitting in their seats!”
If you go to a concert with upbeat fun party-type music and you are “Shocked! SHOCKED! That there is standing and dancing going on here!” then I really think you just enjoy the feeling of self-righteousness that your grumpitude affords you. You shouldn’t be shocked, there’s no reason for you not to have expected that standing and dancing might happen. If at a concert 11,000 people are standing and dancing while 4,000 people are sitting, the standing dancers are not being selfish. They paid just as much for their tickets as you did for yours (or more- since they’re in front of you).
If it’s reasonable to expect that people might be standing and dancing at the show, and you know you will be unable to enjoy yourself in that situation, then don’t buy a ticket. Really, just don’t. Do you have a right to buy a ticket and sit? Sure. But even if you love the band you’re not going to love the experience of the concert because of the reality that people will be standing in front of you. So just don’t go.
And, conversely, if you’re going to a concert with more soft lyrical type music and you don’t get why people are upset that you’re on your feet bopping around, then you truly are a self absorbed idiot. You’re being rude; your categorization of those around you as “old fuddy-duddy squares” is simply you trying to justify your own selfishness.
If it’s mellow music that plays to an older crowd who are likely to “harsh your buzz”, then don’t buy a ticket.
This idea of the crowd collectively deciding to stand or sit has generally held true to every concert I’ve ever been to. There have been times I’ve been the one who wanted to sit- I may have had a long day, maybe my feet hurt. In a crowd with people standing and dancing, I had no trouble accepting that I was the odd man out. I’d find odd angles where I could kind of peer through the bodies, spend some time closing my eyes and enjoying just listening, and spend sometime standing (against my preference) until my feet started to hurt again then I’d go back to sitting.
But I’d never stew in grumpitude that “Seventy percent of the people here are being rude to MEEEEEEEEEE!”
Incidentally, in the SNL sketch the concert that Melanie Hutsell wanted to stand and dance through was James Taylor. So, in the sketch, she was definitely the person being rude as it was clearly a case of the crowd collectively deciding that this was a sitting concert. Kevin Nealon and Julia Sweeney finally got her to agree to sit for “just one song”. Just as Melanie Hutsell was sitting down, the next song started and it was a really upbeat crowd favorite, they crowd all cheered loudly as everyone collectively decided that this was a song to stand and dance for! (And, yet, it was James Taylor. I can’t for the life of me remember or guess what this upbeat dance number might have been!)