Low level arrestees don't get indicted, generally; indictments aren't required in most states even for felonies (unlike the federal system) and some states have entirely abolished indictment and criminal grand juries, so indictments tend to only happen for federal and a fraction of state felonies, biased toward more major felonies in the states that use the system.

And when someone is accused of minor low-level offenses, prosecutors aren't worried about losing the ability to prosecute potentially multiple major crimes, and to lose access to any restitution and criminal forefeiture actions associated with them, by premature prosecution of lesser included offenses blocking the more major ones under double jeopardy rules.