The lighting and video technology of todays large scale concerts is a big draw. Last night I saw Tame Impala in a stadium scale concert that had the most sophisticated visual effects I had ever seen. Psychedelic visuals have advanced quite a bit since the oil blob overhead projector era. No need for chemical alteration to see trails and rainbows dancing over everything.
This band had played a few days before at Astroworld. So it felt pretty edgy when they would psych the crowd up talking about how crazy things were about to get with the next song.