Well, that might all be the case for you. I actually think compared to a lot of events in the tech space, it’s very good indeed - and you’re right to compare it to media/arts things.
What I definitely liked: it’s focused. It’s on a single site, everyone’s really keen to be there, so the crowds are interesting and there’s lots of good people under one roof. Everyone concentrates, too - I saw practically no-one with a laptop out during talks - they were all too busy watching or listening.
It’s definitely a bit more than the sum of its parts. But it’s also not, say, the most completely life-changing event I’ve been to - though I never expect that of conferences; I value them for the change I find in myself, not what other people tell me.