This has, inevitably, led Musk into a rhetorical war with people who actually participated in the rescue operation - a war that he drastically escalated on Sunday morning, when he called one of the cave explorers a "pedo".
Vern Unsworth - who was on the worldwide team of specialist cave divers at the scene - had told CNN that he thought the mini-submarine the Tesla chief sent to help with the rescue was a useless grab for attention.
Musk was widely mocked on social media after the boys were rescued without the use of his submarine. He said Musk could "stick his submarine where it hurts", and that it had "absolutely no chance of working".
Responding to the criticism, Musk tweeted a defence of his innovation while also hurling serious accusations at Unsworth. It wouldn't have made the first fifty metres into the cave from the dive start point.
Unsworth has yet to respond to the Musk's tweet.
Musk said he never saw Unsworth there. He wrote: "We will make [a video] of the mini-sub/pod going all the way to Cave 5 no problemo".
Depending on who you ask, Musk was either just a huge attention seeker or a billionaire rocket inventor just trying to do his bit.
Vern Unsworth, a British rescue worker and cave diver who was "instrumental" in locating the boys before transferring the mission to more specialized rescue operatives, criticized the billionaire for his promotion of a submarine that Musk claimed could assist in the rescue. They were found 200m from that spot.
The boys and their coach entered the cave just seven days before it was due to be closed because of monsoon flooding.
Meanwhile the two Australians who helped in the worldwide rescue of the Wild Boars soccer team were given diplomatic immunity in the event anything went wrong during the treacherous rescue.
"Mini-sub is ready if needed".
"Although his technology is good and sophisticated it's not practical for this mission", Mr Narongsak said.
Perth vet Craig Challen and expert cave diver Adelaide anaesthetist Dr Richard Harris were awarded the protection following negotiations between Australian and Thai authorities, Four Corners has revealed.
Musk did call the other cave divers and rescuers "unsung heroes" in a different tweet. "If the rain holds out it may well be used".