This may be true if we were only dealing with dollar bills being loaned out. Checks and electronic banking made this much simpler to get around.
The reason they can get away with creating money out of thin air, is that they have ability to just create a number in your bank account out of thin air that you owe back, something no company or person has the ability to do.
They loan you $90 of the $100 dollars Johnny deposited, then they still have $100 actual dollars in their vault, but added a promise to add $90 more from a guy who can't just create numbers in his bank account.
When repaid, you have successfully created $190 out of $100. It is that simple. You just want to make it sound complicated to confuse people, just like you always do.