I dont buy either framing. There is nothing better about immitating Jobs.

And using deeper voice is no worsr then putting on cloth to impress. Or using makeup to impress.

If people are irrationally taking deeper voices more serious, using deeper voice is not some kind of evil manipulation. People with higher pitch are not unserious, only treated that way a bit more.

Your deeper voice is not making you more valid or serious in any way. Yes, it is advantage. It is ok to mimic it to get equal advantage.