Especially because most people aren't able to go from SBD directly into their fiat. The extra complexity of having to go through BTC or ETH just makes everything harder.
It would be nice if somebody would tie in an easier way of doing things. I do think regular people are gradually becoming more crypto-literate, though. I'm constantly fielding questions about how Bitcoin works, and eventually maybe that will trickle all the way down to Steem.