I don't think the issue is "I want to do illegal things in public without consequence." It's more, "I don't trust the mechanisms of enforcement to use this power justly."
For example: Radio City Music Hall used facial recognition tech to identify and ban a lawyer whose firm was suing them. She wasn't even working the case. RCMH just issued a blanket ban. It's abusive.
And there are other risks. Stalking is a huge one. (Some creep takes your pic at the supermarket and now you spend a year of your life getting creepy messages and feeling unsafe everywhere you go.) Or there's the risk that people who participate in lawful protest will face retribution or punishment by corrupt law enforcement.
This is why Singapore is the safest country in the world. You can leave your laptop overnight on a bench and pick it up tomorrow. The death penalty for drugs is a worthy sacrifice considering the extremely positive societal outcome.
Rich people or not, it doesn't matter. Both rich and poor abuse drugs. Following this logic US would be the poorest country with 1% ultra rich utopian-like people as well.
Also cannabis is a legal drug in only 10 countries worldwide. It's not universally approved and won't be any time soon.