“I’d like to be remembered as an innovator,” he said, speaking from the interior of one of OceanGate’s submersibles. “I think it was [famous American General Douglas] MacArthur that said, ‘You’re remembered for the rules you break.’”
“I have broken some rules to make this,” he conceded. “I think I’ve broken them with logic and good engineering behind me. The carbon fiber and titanium—there is a rule that you don’t do that. Well, I did.”
I read that it looks like they may have been making their ascent before imploding, which means he may have know about how bad it was before he died.
https://www.npr.org/2023/06/23/1183975136/james-cameron-titanic-titan-sub