They weren't.
Absolutely not! Where did you get the idea that any of the early adopters trusted Satoshi? The code is Open Source for a reason. It allows talented and knowledgeable programmers to look at the code and discover (and fix) any weaknesses. It allows individuals to determine for themselves if the code will work properly, instead of trusting that it will do what the original designer says they intended for it to do.
In what way?
There is a difference between being an artist and making a reasonable effort with reasonable skill.
And security is also VERY difficult. The difference is that nobody loses their identity or life savings to a poor aesthetic.
Then why would they be trying to create something that requires those qualities. If you are serious about running a business, then you either need to ahve the skills, or you need to hire people that have the skills. If you can't make a reasonable effort with reasonable skill, and you don't bring in someone that can, then why should I believe that you did anything else properly at all?