Re: she's right, of course.
I've got tickets to see KB and wouldn't even bother taking photos with my phone, let alone get in everyone's way and record a video on it.
But I wouldn't mind taking a few snaps with my decent camera. The ticket conditions (as pretty much standard) forbid photography and I don't want to risk getting it confiscated on entry so I won't bother.
But it pisses me off that photography is generally forbidden (even if largely unenforceable now that just about everyone carries a camera with them) but crowds of numpties gather at the front to hold their phones aloft without being challenged by venue staff.