meanwhile the SBA is currently loaning money at 3.7 percent under the Coronavirus disaster relief initiative. Must be nice to get an almost interest free loan as a large company while use little people have to pay through the nose.
You seem to be misreading the parent comment. It isn't complaining about small businesses getting loans, it's complaining about them having to pay a higher interest rate than large corporations. (Presumably the reasons for that are a combination of the corporations being "too big to fail" and their loans being collateralized.)
Yeah, you're right. I didn't think any sane person that's eligible for an SBA loan would be complaining about a 4% interest rate. Private unsecured small business loans run like 20%.