While I don't think that's an apt analogy, is not watching music videos considered particularly odd...?
Personally, I prefer my live music raw. I wanna see the amps, the wires, the sweat etc. Light shows and stage dressing are pretty and all - I'm not against them - but, with few exceptions, I find it all rather superficial. Rather just see the band or whatever do their thing.
I do think that if you loved a band but refused to watch their visual work that would be odd, yeah. I agree with the first half (same reason I won't buy anything but GA and I won't be anywhere but next to the stage). But what some bands do visually is some amazing stuff, and you can't get that experience watching it on YouTube either. I say it's not worth dismissing.
If I had my choice I'd see Metallica play at the local bar. But their amazingly-produced stage show is pretty wild as well.