This is the same thing. Stop.
Musk has made some tech innovations but he hasn't changed the lives of many generations of people yet. I'd only put him at the level of Edison
Elon Musk is probably up there, though. You could say people like Henry Ford are on his level, but Elon is certainly more broad in his scope. I think people like them are probably accelerationists, meaning someone else would have done what they’ve done eventually. That could be a long eventually though. It’s hard to compare them to people who shaped history through their actions that nobody else would have done the same way.
Since Tesla was started, they've sold ~9.6 million cars. In that same time period, Ford has sold 100 million. Musk is no Henry Ford, it's much more accurate to compare him to P.T. Barnum and Bernie Madoff.
Is it like trying to say "the most important bacterium in a petri dish"?
Without diminishing the impact that Musk has had, I'm fairly certain that Musk isn't the answer. And either way, the intent of saying that Musk is the most important person in history I'm fairly certain wasn't a very grounded decision. I'm sure it was more an expression of reverence and fealty.