I'm still confused on what that video segment was all about. They replaced an already super light carbon fiber frame with another one that was "naked?" Okay...
I thought that pretty much all riders in the pro peloton were riding sub-6.8 kg bikes with whatever parts/weights necessary to bring it just over 6.8 kg, regardless of what kind of stage it is. Maybe I missed something in that video. At least the end made me laugh a little.