Some places have done away with bail on the basis that it targets the poor, like NJ, IL and the UK. But eliminating bail does not mean eliminating all pretrial detention. This couple would be in pretrial detention even in states without ball, because their own actions made them a flight risk.
And appeals are meant to be used when you think the judge made a legal error, not when you simply don’t agree with the law. If you can’t acknowledge that a correctly applied law may be used against you, then your trial will take longer than most.