In this case, not owning one, means I know nothing about it, as I have no interest in knowing anything about wabi beyond what I can glean from others. Therefore it’s probably best to not speak from a point of ignorance. What you choose to do is entirely your decision. No prerequisite required, so I’m not sure how you arrived at that opinion. I just try to avoid talking out of my arse as often as possible. I don’t always manage that, but I at least try.