@ still means the same - "at"

I wasn't accusing you of the fallacy of unfashionable=stupid, Ruth. It's an assumption that has evidently been made by the fashionistas of every age, in clothes, speech, music... One of the special things about folk music is that to some extent, though very inconsistently, we resist it.
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"Crap" doesn't really have quite the same meaning as that use of "gay" - it means something is worthless rubbish, but it doesn't have the same in-group sneer to it. It's common to different generations, and has been for generations. Hardly "the most recent".