Replying to questions shouldn't break the 36 hour bump rule.
You're advertising the bass as being made from swamp ash & people have understandably asked for evidence to support this, given Matsumoku was surrounded by Kalopanax trees & the nearest source of true swamp ash was 6000 miles away. The "fact", as you keep referring to it, is actually an opinion of yours and some unnamed luthiers. You have to appreciate that people don't know you or these unnamed luthiers so why should they respect those opinions any more than their own?
If you want to sell anything on trust you have to be open & honest, being evasive & dismissive won't persuade folk to part with their money.
Just saying like.