Well blockchain really are something and it do can help the use of legal marijuana. People start to think that marijuana could realy help someone and safe life especially for medical and i read about marijuana ise for depresion patient and it also use for rehabilitation of drug abuse. So i think its good to track the use of marijuana by ising blockchain.
The question is not if weed industry will be good for cryptocurrencies future but will cryptocurrencies want to be tied to the word marijuana. I know weed is now legal in many places all around the world but it is still holding a lot of troubles in many countries as well and even in the countries it is accepted as legal there are people who do not like it and wish it wasn't legal.
Hence crypto is already remembered as the "money laundering, mercenary purchasing, darknet using" thing and if we want to get our name with weed together that may not have the professional outlook we want. We are fine with our little SEC accepting the ETF, bakkt doing stuff and wall street liking it and so forth, that way we can look professional and be fine, but weed would make it too liberal once again.