A possible concise summary is:
The speaker comments on the recent tragedy of five billionaires who died in a submarine while visiting the Titanic. He mocks their stupidity, lack of empathy and waste of money. He jokes about the possibility of James Cameron directing a movie about their story, with Leonardo DiCaprio as the pilot. He also makes references to other movies, songs and celebrities.
Here are the key facts extracted from the text:
1. Five billionaires died in a submarine accident while visiting the Titanic.
2. The submarine was built by Ocean Gate, a company led by CEO and pilot Stockton Rush.
3. Rush had broken some rules and used titanium to make the submarine, which he claimed was innovative and safe.
4. The submarine exploded and there was no suffering or pain for the victims.
5. One of the victims was an explorer who had been to space and broke several world records.
6. Another victim was a father who took his son, who didn't seem to care much about the tragedy and went to a concert instead.
7. James Cameron is the director of Titanic, a movie about the ship that sank, and there is a joke about him directing Titanic 2, a movie about the submarine that exploded.