I think it's more complicated than that, all of these roles come with substantial amounts of near unilateral executive power that can impact the way the country is run for decades to come.

Even all of the existing US government tech posts like the USDS and 18F are ultimately there purely to service the needs of a bureaucratic agency and their particular management.

For a technology specific role to have the same level of prestige as someone on the federal bench or leading the FBI, they'd need to be giving them unilateral regulatory powers over the broader technology industry in the country.