Your argument holds little water when you wave away the ratings of "random rating agencies". Their ratings are what drives investment decisioning by the largest funds in the world.
[1] https://www.cnn.com/2019/09/10/business/ford-downgrade-junk/...
I'm not waving away rating agencies. I'm saying that General Motors has less liquidity than Ford. In your "no bailouts" world, Ford would be in better shape than General Motors. General Motors is investment grade, does that magically make them better than Ford even though cash on hand says different?
Ratings really mean nothing right now as far as the health of a company goes and ratings agencies have specifically mentioned that they are backlogged with assessing all consequences of what's going on right now. Ratings have and are always backwards looking data. How the "largest funds" in the world invest is completely irrelevant for this.
It might behoove you to learn what those letters mean before you partake in a corporate debt discussion.