Ginat got into the lightweight bike game. Check out the Tune Hex-taper BB. I have never really been a fan of splines, but I could see this as being a good compromise between the spline and and square taper BB.
I think it’s well under the UCI weight limit, as well. But this uberlight bike thing is definitely a new sport unto itself. Many of these bikes could easily be unusable for most riders.
People wold go bonkers with stupid light bikes, if there were no weight limit. I wouldn’t want to ride a 10 pound bike and I wouldn’t want to be in a peleton with people that were riding such guaranteed accidents.