So cris crocker joined the religion that hates him? Yeah, maybe they should become buddhists, then they'll be a part of a religion that is gaining popularity in the west, then their convert gaining mission might become for real.
No seriously though, if all the muslims converted to buddhism, and started to try to spread their new religion worldwide, they might actually succeed. And a bonus, they can actually win a debate with atheists over religion, because they won't have to deal with proving the existance of god nor creation. Its win win.