Just like any other job position. Some do it well, some perhaps not. Some know their stuff, and some are full of BS. Often, it seems, even the good ones are forced to display things they themselves think are stupid, simply because it's whatever is catchy, novel, or offensive that is likely to attract a paying attendance to the venue. That's not an ignorant stereotype - I've heard em making snide jokes about it around my own dinner table. Sadly, times are changing and museums are in a bit of trouble unless they have some big attraction from time to time. But not everyone can get ahold of Tut's mummy or the Mona Lisa. So quite a few of the Modern Art venues are resorting to in-house paintball wars and alt action flicks. Who wants to see a subtle black and white print in a frame when you can walk into a room with a giant digital screen and see the GoPro view of the last few seconds of some bat-suit rock jumpers life? .... Sorry to sound a bit bitter, but there's a major local museum that I've long admired, that I've worked with in a number of manners, but that now has resorted to giving a major show related to
local Hip Hop culture. Heck, I thought a museum would be one of the few places of refuge where a person could go to get away from that kind of thing!