Yes, people will steal other peoples "ideas" especially if you rank up high with your metadata, you wouldn't be able to know that they stole it, most would just disregard it and assume that someone else has thought of the same idea.
Ideas are meant to be used by anyone. Nobody 'owns' an idea.
Coin wallets are different, a store of personal wealth.
I am wondering if rogue groups of NSA analysts might use their unfettered access to computers to steal cryptocoins?
If you think up a unique patent then it is the product of your labour and belongs to you as much as your physical property.