I live in LA and my nephew is homeless and on drugs and I can guarantee it is almost never homeless->drugs. I would say it is very rare for someone to become down on their luck, become homeless, and then start using drugs.
Think about it. Most people have at least one friend or family member...
I just finished my SCX-24. All aluminum with carbon fiber frame rails. Upgraded all the electronics. This was my stuck at home COVID project for the better part of last year. Fun little crawler.