I understand your point, however it’s flawed from the start in that government interest rates should not be used for a means of risk assessment, in my opinion. Your argument makes sense for private institutions. Bank loads should follow your logic. The government, however, should use interest rates to funnel new money where it’s needed most, and not towards private investors.
I guess my issue is imagining private banks being bypassed, but it seems you’re saying that isn’t a thing in the real world.