I definitely used to see the point in a full sus frame with a steel front end and alloy links, chain/seat stays, but that was back in the early days of DH where everything weighed a ton anyway and it all broke far too often and most manufacturers warranty dept didn’t give a shit.
The only advantage to a steel front end I can see is it’s ease of being repaired, but no one (bar maybe CynicAl) would ever bother having a frame re-welded, especially not the type of fashion/niche bandwaggon queue’ers that will buy this. and in these days of every single problem being posted online for all to see distributors/manufacturers are far happier to hand out replacements to keep their customers sweet.
If you read the marketing, Cy wasn’t stupid and didn’t actually make any claim of this being stiffer/stronger than a comparable weight Aluminium frame, just stiffer/more durable than his own previous abortion of a frame the Hemlock.
I happen to think 7.6lb is a decent weight for it’s travel and geometry, but I don’t really understand why anyone is bitching about full build weights, You could build a10lb DH frame into a full build weighing 30lb if you really wanted but you probably couldn’t ride it to anywhere near it’s potential safely without parts breaking. it’s the same with Hardtails and shorter travel sussers, why anyone would want a BFe or Rocket with XC strength/stiffness rims, weak sidewalled tyres, weak/flexy cranks or a light flexy stem for example is beyond my comprehension.