Hopefully, the number of people you are talking about is fairly small, or maybe I'm just out of touch with the rise of crime and corruption on the dark web - but I wouldn't lose any sleep if they got shut down. I'm fairly libertarian about drug use, but there's a lot of other terrible stuff that is enabled along with drugs in this system.
Well, you don't have to like the criminals of today, but lets also not forget that good people are deemed criminals under repressive regimes, for crimes such as "watching K-Pop."
Even today, many in more liberal US states will find it unconscionable that someone could still have their life ruined over a little bit of weed in the more conservative states.
Again, not saying this way is the right way. Just saying, there's a lot of value in such tech -- for better or for worse.