I certainly cannot dispute any of the points made there. I think it's a really interesting topic to learn about.
There are some good sources that strongly disagree with these points though. For example, a study done by the sae showed v type 4 point harness to be as safe if not more safe than 3 pt harnesses with no occurrence of submarining in their tests. This study assists limited though as the test numbers were small and the crash scenario was quite limited.
https://www.sae.org/publications/technical-papers/content/2003-22-0017/
And schroths crash test videos with the 4pt ASM belt are impressive to watch (although I always question when a company does research that so strongly supports it's own claims)
https://m.youtube.com/watch?v=EGrhJTSQRkY
Anyway, thanks for the replies. It's always nice to hear other people's insights and feedback.
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