The adhesive SCC recommended was an aerospace structural adhesive - Loctite EA9394. Which is fine if you're bonding metals/composites for aerospace but not necessarily compressive applications.
There's lots of other issues with the SCC report. The FEA only shows stresses in the 2D planes (even though it references 3D), the report inappropriately references BPVC rather than PVHO and it shows the first deathtrap was likely constructed with the carbon fiber material in the Appendix A. According to that COC the fiber was manufactured in 2010. Even if that was the material used only for testing the test results are worthless. Even for the scale models.
The fiber is an important point - its not just that its not viable for aerospace as Stockton bragged about, its that the manufacturer no longer guarantees it meets the material capabilities.
I asked the question about humidity when I saw the video of the adhesive process. Sure enough the
TDS for the EA9394 adhesive warns about this. I also didn't notice this before but their mixing process was extremely suspect - handmixing with a spatula isn't the way to do this. Both of those issues are not unique to this adhesive, so even if it was a different one there would still be defects. If you look at aerospace adhesives/sealants - there are premixed or static mixers precisely for this reason. PMF (pre-mix frozen as in -40°F to stop the reaction) was designed specifically to prevent human error in your process. And of course to shift liability from aerospace OEMs like Boeing/Airbus to the adhesive/sealant manufacturers.