It is really telling when people say that. It’s clear they think the job of harness development is done by selecting the agent environment.

Akshually, they said "harness," and not "test harness."

There's no particular reason "agent harness" can't have practically the same definition, substituting test-specific concepts for agent-specific ones.

Harness: a piece of equipment with straps and belts, used to control or hold in place a person, animal, or object.

So yes the generel meaning applies to test setup and running and also to the agent cli which is the harness for the model.

May I ask about your trust issue regarding Google models?

Is it about quality issues (lack of guardrails, agent runs dangerous commands)? I have seen first-hand Gemini-cli going out of the project directory and using my home directory as a work area.

Or is it about terms of service?

Or other concerns?

You're free to fight the terminology if you want (I did at first too), but the zeitgeist has chosen a meaning that disagrees with you, so people will see you as being deliberately obtuse and unpleasant when you fight back.

Learning when to let go is an incredibly important skill that I have learned way too late in life.