“and several such SMEs plus those who are in the carbon fiber fabrication industry have commented about the bad layup technique chosen.”
The cross layup is required with fabric that has single direction fibers. These rolls are manufactured with fiber patterns designed for particular uses.
I haven’t seen any of the comments you refer to.
I’m aware that carbon fibre, while stronger than steel, can be prone to sheering if the forces against it goes against the grain. It probably wouldn’t have been my material of choice to use for structural purposes.
Even with cross-laid fabric strips, the pattern of layup is critical. Go over to Sub Brief’s review of the current situation and check the comments - you can also Google those comments and find articles making similar comments well prior to this incident.