I really like the tag line, especially in combination with the name of the service.

I don't think you have to hang out on r/wsb to have an ounce of irony about wallstreet in you.

You might consider the impact it has on potential customers. I can see how it's an in joke for r/wsb, but unless your target audience is only that community, it raises a red flag.

Lighten up, the effect of this quote is probably as effective as Code of Conduct