I’m suspicious of the failure of Prop 6 for a couple of reasons. One is that as originally worded, it was deceptive. Instead of informing that this was a repeal of the gas tax, it informed that it removed funds from roadways etc. A correction was mailed out, but I doubt most people read it. The second is vote harvesting. How many people allowed themselves to be influenced by those who “harvested” their ballots?
Ballot propositions are usually worded to sound like exactly the opposite of what they mean. One of the many dirty tricks pols, usually democrats, play on the electorate.