I know some people aren’t fans of watching videos. So, I will summarize:
This woodworker did some experiments with gluing wood in different ways, using a hydraulic press and measuring equipment. It turns out that, contrary to the prevailing wisdom, gluing wood end-grain-to-end-grain is pretty strong – stronger than gluing edge grain in these tests.
I am overjoyed you busted this myth. I enjoyed the video very much and want to thank you for the information and the way you presented the results. I have learned much today. Thank you for sharing your knowledge.