I suspect this is true. The only thing that should really be affected by vibration is the hard drive, and spending the money on solid state might save you that problem.

But I carry around a laptop that's been traveling by pannier for about a decade - I'm now the 4th cyclist in possession - and just drop it a pannier. Still works fine. Mind you, I don't really care if it stops working - I've gotten my $0 worth of use out of it, and important files are synced to dropbox, so HD failure isn't a problem for me.