I do (or have done), layups and destructive stress testing on CF, and you’re not wrong. The method of the filament wind shown in one of their videos also looked very dubious to me. And the glued on end caps may have been the only way to achieve that but yeah. if tube didn’t just outright disintegrate, it probably eventually deflected enough (they said 4” of hourglass shape was normal!) to peel that joint open, or crack the composite next to the bond.
Totally narcissistic and hubristic. Many people told him he was fucking op, both within the industry and his own experts. I’ve worked for bosses like that and if it’s their brainchild these guys will dig in their heels until the bitter end. Never seen a better illustration than this.