"He's going to be him and he's going to do what he's always done. I think that's a mark of immaturity," Pachter added. "He's got to show [investors] the respect that they deserve because he's asking them for their money."

He said that Zuckerberg's seeming lack of respect for the process tells him that the CEO might not be perfectly suited for the CEO post in a company that's expected to complete one of the in tech history.

"He most certainly is a genius and he really has done something that no one else could do," said Pachter. "I think he is well suited to be the chief product officer, the chief user experience officer ... to decide every feature that goes in. I'm not sure he's the right guy to run a corporation and to answer to shareholders."

Zuckerberg didn't attend Facebook's presentation to financial analysts in Boston on Tuesday.

Dan Olds, an analyst at Gabriel Consulting Group, said Zuckerberg's absence from the Boston meeting shouldn't hurt the firm's IPO. The company's reputation, he said, is strong enough to sell itself.