Nah, it's almost as simple as it could be. Try designing one with built in crypto agility and an automatically varying block size limit.
Actually the "script" system, most of which is crippled anyway, is needlessly complex. But other than that it's really simple.
I am not claiming that the bitcoin network is a scam, I am claiming that some of the people who accept bitcoin are scammers and they scam by providing an illusion of safety.