What's the big fuss about Campag?

sells a lot?
what you mean there is lots of it about as it was used for all kinds of frames for the 40 years while it was in production before it was replaced by steels with better material properties? (725 in 1976 and all the other steels that followed)
or that reynolds sell a lot of it?
only it hasn't been made for years (apart from the special reissue sets for doe-eyed collectors)

Sells a lot meaning it as been one of the few tubings that still has it's credentials up there^, it's still sought after, still makes people pay the extra pound for it; reason? maybe that same syndrome, too much hype; obsolete? probably, but then... v

...working on a bike that I expect to take a few knocks and still be usable with dents and dings in it and not to suffer from sudden catastrophic failure if it gets a crack in it but which is still relatively strong and light and comfortable...unless you can afford titanium.