With interest rates that are higher than the last 10 years of near-zero levels now you can earn more from the credit markets (bonds), because money aren't free

With interest rates that are higher than the last 10 years of near-zero levels now you can earn more from the credit markets (bonds), because money aren't free like they were recently. Most people have forgotten that and the author points that with bonds you can yield much more than what you could recently get.