Perhaps there is no need to actually understand assembly, but if you don't understand certain basic concepts actually deploying any software you wrote to production would be a lottery with some rather poor prizes. Regardless of how "productive" you were.

Somebody needs to understand, to the standard of "well enough".

The investors who paid for the CEO who hired your project manager to hire you to figure that out, didn't.

I think in this analogy, vibe coders are project managers, who may indeed still benefit from understanding computers, but when they don't the odds aren't anywhere near as poor as a lottery. Ignorance still blows up in people's faces. I'd say the analogy here with humans would be a stereotypical PHB who can't tell what support the dev needs to do their job and then puts them on a PIP the moment any unclear requirement blows up in anyone's face.