"It's mainly for letting non-criminals (drug addicts, DUIs etc.) out early. The law isn't for protecting rapists, domestic violence offenders, murderers, robbers."

That's certainly what it was sold as, but SB 91 lowers penalties for almost every crime (including armed robbery, manslaughter, residential burglary, and assault with a deadly weapon). To be fair, it does not change penalties for sex crimes and slightly raised the mandatory minimum for first and second degree murder (not that anyone was getting the minimum anyway).