I always thought that fast, cheap international wealth transfer was one of Bitcoin's core functions, not an afterthought.
For me, using it as a vehicle for speculative trading was the afterthought. I bought mining equipment before I bought my first bitcoin.
You're correct about bitcoin's functions, but this is a little different. They go through brokers to transfer money. So the people using the system don't need to have access to the Internet or know how BTC works. The brokers are the ones who deal with the BTC aspect of the system.