You mean the old provision had no tax. How could California be so stupid? Everyone who wanted the ban on pot removed, also wanted the tax.
Trying to gin up fear of what a GOP administration might do in the fedguv? Probably their best approach would be a pot amnesty for the Obama years.
Prop 19 allows localities to tax marijuana if they choose to allow sales.
But it allows everyone over 21 to grow 25 sq ft of marijuana completely legally. No tax, no doctors note, no checking in with government. Just legal.