It seems to me you're the only one conflating things? Grandparent didn't say anything about getting out of having a trial, or about needing lawyers. They're talking about how people with money can use it to avoid spending time in jail, and gave a perfectly valid example of someone rich doing exactly that.
That is pretty bad example. In theory, bail should be affordable to the individual person. It is meant to be insurance that you come back for actual court date.
The outrage there is bails being set to unaffordable sizes for poor people. OP was picking out the case where bail functioned as intended.