Business people doesn’t mean customers however. Which was my point.

In fact the only time the customer is mentioned is in principle one: “Our highest priority is to satisfy the customer through early and continuous delivery of valuable software.”

Business people absolutely should be involved - product owners & stakeholders (or a proxy for them).

That’s fundamental but again: business people != customers.

You seem to think stakeholders/product owners are devs direct managers too. That’s rarely the case, if ever, on any functioning agile team I’ve seen. They’re orthogonal to each other.

I think I answered this possible objection, but you've ignored that. Also, I made a distinction between stakeholders and devs direct managers, rather than conflating them.

I don't believe I can be of further assistance to you.

Your answer fell short and is contradicted by the agile principles. Your distinction was practically meaningless given your later usage.

You were never any “assistance”. You had nothing of substance to add.