Why should crypto currencies not be considered a security asset?
https://kurtalaw.medium.com/the-howey-test-the-supreme-court...
https://decrypt.co/123032/cftc-chair-says-ethereum-is-a-comm...
Also, the SEC does not determine what is and is not a security. That is determined in court. Gary Gensler can give guidance on what the SEC will take to court, but he is not the final word on what is a security.
The SEC does not care if you bring back Euros from vacation and they are worth more money when you find them in your backpack a year later and exchange them.
You might be able to simulate a currency, but that does not make it so.