Yes, you are repeating yourself without addressing the issue that the ability to verify does not, by itself, confer any trust. Even if we accept your conclusion, it does not mean the other risks are inconsequential.
I think his point is the most consequential issue is the RNG, which to me makes a sort of sense.
You can never be truly secure and eliminate all potential concerns (what if there are invisible people with nanotech in your house - not a known concern, you can always manufacture some artificial concern), so you try to address concerns in an order of priority.
This seems like a very reasonable thing to do, in fact everyone does it - it is why we even bother to call anyone "paranoid" to begin with, i.e. we have our own list of concerns and try to address what we can...
Yes, you are repeating yourself without addressing the issue that the ability to verify does not, by itself, confer any trust. Even if we accept your conclusion, it does not mean the other risks are inconsequential.