So when exactly do you think SBF stopped commiting crimes?
Was it before he was let out on bail or after?
What makes someone who deals weed keep commiting crimes after they receive bail but with someone like SBF it's different?
If you're buying weed and you trust your supplier who just got bailed then you'll keep buying from him. Don't think anybody is looking to invest with SBF right now so his opportunity to repeat offend is much less.
To return to topic: yes, a person arrested for carrying weed is more likely to do the same again while on bail than this guy is to repeat his fraud while on bail. The fact that it makes no sense to incarcerate people for small time weed possession is a completely different matter.