You're throwing a lot of social issues that are not related to each other, and the roots for some of them aren't event related to money at all, such as substance abuse.
Crypto exist because there's a flaw in the fiat system, which is the lack of decentralization. There might be some side-effects such as an increase of transparency, etc, but it's not a one size fit all solution. Judging from your post, it seems 'safer' means that the number of crime and etc would decrease. I'd say no for that. There's no guarantee. But it will be 'safer' in terms of transactions security & decentralization.
Exactly my thoughts! The world is not that easy to understand. Various factors influence others. While we can predict, to some extent, what can happen based on history and some theories, it is impossible to tell what the actual impact of crypto will be like in the future. However, it's doubtful that it will solve all of society's problems. If it was the case, crypto should be considered as a higher power or some deity. Let's not go this direction.