This is the new "but that was not TRUE communism". The more tolerant places are overrun with drug users and homeless camps yet their supporters online will say "but if we provided more money for housing and decriminalized all drugs, now that would solve the issue".
There's a debate to be had on that for sure. I'm not for prohibition, I voted to legalize cannabis (even though I don't consume it) because it didn't seem much worse than alcohol and realistically once 50%+ of you population has tried it, that ship has sailed. Some people claim it helps them relax, sleep, etc...
Now with that said, crack, meth and heroin are not "social drugs" and are not compatible with a healthy society. They are strongly addictive and cause permanent damage. You might disagree (and that's fine), but I don't see how making those legally available outside of addiction treatment facility will lead to favourable societal outcomes in any meaningful way.
Honestly, I don't think anyone can seriously claim it is anywhere near as bad as alcohol, other than in two regards: smoking isn't great for you (but that's a method problem, not a substance one) and the smell in public (which is a minor issue and, again, one that can be mitigated).
By any other measure - addiction, short-term and long-term harms, indirect harm to third-parties - alcohol is worse.
