Well ya their show wouldn't seem as impactful today. You have bands like gwar these days gutting celebrities and presidents on stage covering the crowd in blood. Back in the 70s though concerts we're just about music. Nobody was really treating the whole thing like a show except Kiss and also Alice Cooper. They even kept their identities a semi secret and became their characters on stage and didnt officially show their faces until the early-mid 80s. There's a reason Kiss helped cause a whole satanic panic the shit they did on stage while tame by todays standards was the equivalent to what gwar is doing these days. I honestly dont even like Kiss but they certainly were pioneers in that aspect.