Why?
People want privacy.
They want safety.
They do not trust the government to refrain from stealing their money.
They do not trust the government from shutting down access to their money for political purposes.
Texas would enhance its reputation as a safe place to do business.
Cash is anonymous money. Coinage is anonymous money.
The ability of governments to monitor every transaction, and thus control every part of every person's lives, is a very recently invented power.
An anonymous digital currency allows people to transact business via digital means safely, without fear of control or confiscation.