I’m sorry, but it’s true.
I say that in spite of the apparently real investigation into this internet-famous debate by National Geographic and James Cameron himself:
All the evidence you need is from the scene itself: When Jack tries to get on the door, it almost capsizes. Putting two grown, soaking-wet adults on it amidst the post-sinking chaos—especially without Jack being able to act as bodyguard—would’ve sunk it easily.
So RIP to Chippewa Falls’ favorite son and cinema’s most famous manic pixie dream boy.