Sounds more to me like a very few people hate CF and Alu.
Facts as I see them: Yeah, custom CF only works if you are an aerospace engineer. But ... custom steel is not cheap, and you have to know pretty much exactly what you want to get any benefit of a custom frame.
Most people can take a bike off the rack and by adjusting the adjustable bits, can find an excellent fit. Not every person can fit every bike, but there are enough different bikes out there that most people can find a really good fit ... those who don't probably don't even know what a good fit feels like.
For most riders, the cost and the knowledge needed to take advantage of custom frame-builders renders custom steel Not an option. For those who have the cash and the knowledge ... likely they will always have that option. You can still buy wooden canoes and kayaks.
I don't see why anybody would disparage any frame material. I don't know why anybody would bother defending any frame material.
In time I doubt there will be anything but custom steel frames ... Alu offers so much more formability and CF far more than that, and as the technology spreads, CF will probably prove to be the most cost-effective frame material---it can do what the rest can do and more, and in time will be cheaper.
As bike weights drop, lightweight steel will grow more expensive and no one will want heavy steel--eventually only steel aficionados will seek out the small-volume builders, and most people will never have ridden steel.
On the other hand, in time even basic Alu frames will be as comfortable as today's CAAD 10s and CAAD 12s, and with CF forks and seat posts, ride quality will not suffer at all compared to steel.
The habit some people have of trying to deny others the experiences of different frame materials .... it is sort of frame-material racism, and has all the logical justification of actual racism. Not much point arguing the point.
Last edited by Maelochs; 07-06-16 at 09:05 AM.