No, you haven't introduced anything, because sending money to a bitcoin exchange is exactly as hard as sending money to a merchant.
I already conceded the global bridge argument, but that's just a legal loophole. Authorities can easily legally treat depositing money into a bitcoin exchange as sending money abroad and make it just as hard.
If armed men want to stop you from using bitcoin, they can. On the other hand, if Paypal doesn't do business in Cambodia, I can still hire a web designer there.
I already conceded the global bridge argument, but that's just a legal loophole. Authorities can easily legally treat depositing money into a bitcoin exchange as sending money abroad and make it just as hard.