i see no point in this really, how they are going to know that someone is not telling the true, it's easy to say the false, for the question "how you obtained your bitcoin"
other question are just destroying their privacy, like why they are withdrawing , which again can be false
bitcoin will never be anonymous, as long as you use an exchange, to be truly anonymous you need to use a decentralized exchange or buy stuff with bitcoin without going through fiat
it's not for a reason that soem people buy coins here, this forum can act as a decentralized exchange