Of course there are bootstraps available. Look around you on this forum; it's full of hard working, self taught, highly motivated and successful individuals working in an industry that has some of the lowest barriers to entry imaginable.
I think when choosing between "unhoused, with access to drugs" and "housed but no access to drugs", many (not most, and not you!) choose the former. It's empirically true: most shelters don't allow drug use and so addicts turn them down in favor of camping.
You are projecting your own relative values if you think no one would ever make this choice. You are also over-weighting your own experience when you say that all drugs are a coping mechanism for all people all the time. Different drugs affect the same person differently; the same drug affects different people differently. Caffeine, Adderall, LSD, coke can all be productivity enhancers and are on average less destructive than meth. With all these tools at one's disposal, and plenty of precedent for successful straightedge approaches to life, suggesting that the meth problem is a result of people earnestly trying to survive the rat race is poorly supported by logic.
I can't even guess what you think the alternative to "earning a living" should be. The default should be to provide unlimited benefits for those who have no interest in contributing to society? Great, that's what we effectively are doing, so you must believe the status quo is ideal. But if you believe these people aren't living their best lives, then maybe consider that the current approach (extreme coddling) isn't helping them.