I am not a mechanical engineer, so you're right, I wouldn't design a better submarine.

Peers in the industry though have expressed concerns, such as in this 2018 letter:

> This letter is sent on behalf of our industry members who have collectively expressed unanimous concern regarding the development of TITAN and the planned Titanic Expedition. Our apprehension is that the current experimental approach adopted by Oceangate could result in negative outcomes (from minor to catastrophic) that would have serious consequences for everyone in the industry.

https://int.nyt.com/data/documenttools/marine-technology-soc...

Or when they fired and sued their director of marine operations who raised safety concerns:

https://www.documentcloud.org/documents/23854184-oceangate-v...