I think you misread his post. I'm pretty sure he was saying he thought the soundtrack was great, the only problem being that it didn't have enough songs on it, so he contemplated adding more songs from the same era as the songs on the soundtrack to it.
I loved Fallout 3's soundtrack. Without a doubt hands down loved it. I listen to the GNR online radio station. I think it fits in well with the crazy distopian setting, or I guess provides an interesting contrast. The music is upbeat and cheerful and sort of rubs in the fact that you are so fucking and will never see another blade of grass ever again growing in the barren wasteland you call home. Also, I mean, songs like Butcher Pete are just insane. It's an upbeat song about someone who likes to chop people up. Plus the music is mostly 40's and 50's music, which fits in perfectly with the games sort of space age retro-futuristic setting.
So in all, I found the soundtrack perfect.
But this is coming from a girl who wish the Ink Spots could sing at her wedding.