this organization is not acting as honestly as the best in the business currently do.
It's not even about not acting honestly. It's more about transparency than honesty.
It is possible that they are being honest, really do have all the coins they claim to have, but for some reason don't want to prove it. There's nothing dishonest about such a stance.
It's also possible that they don't have all the coins they claim to have, and so can't show their cold wallet address without admitting to the problem.
As it stands we are left suspecting that they are insolvent, but we have no proof either way.