Varies heavily by venue and subgenre. All of the shows that I can remember offhand I saw absolutely minimal phones / videos / picture taking. It was usually me (briefly) because I love going back through a decade plus of videos and reminiscing, usually 1-3 per show depending on how important the show was to me.

There’s a sampling bias that occurs if you rely on social media to inform you how rampant “influencing” is - of course shows with more influencers will be the ones that show up in your feed, because they’re the ones with the influencers!