Updated my comment. Scary thing is you still haven't responded to the fact your FAQ points towards a complete disregard to data protection.
You could have shut me up instantly by saying. "The FAQ is poorly written. There is no formal way to access client data... blah blah"
Instead you have no response. It doesn't seem to bother you that you suggest you can access any clients personal data at the drop of a hat.
Regarding knowing what your site is built on. You don't seem to understand that you aren't a designer. You are a co-founder. At least I thought you were. If not disregard what follows. As a co-founder you should know what is going on in your company. You should know what your website's technology stack is, you should know about your costs, your pricing and your marketing strategy. It is in your interest. This isn't about programming. It is about business ownership and knowing what the hell is going on with your product.
If you approached an investor and you couldn't answer a few questions about the technology used in your site you would be sunk moments after setting your foot in the door.
If none of this bothers you then fine. My boss knows no programming but he knows how many servers the company uses, the OS on the servers. The database system. He knows current storage (%) total vs available. he watches the technologies we use for updates. Yet he know's nothing about programming or design for that matter. He is a sales person.
It is in his interest to know these things because his product is a website and he doesn't want to look like a dick in front of his clients or financial backer.