I think what OP was trying to get at is that a dark web crypto exchange would not offer any benefit over a clear web one (both need to know who you are to send

I think what OP was trying to get at is that a dark web crypto exchange would not offer any benefit over a clear web one (both need to know who you are to send cash). Meanwhile, there simply is not clear web drug store, so dark web ones don't have to offer anonymity to their buyers