I think in terms of official correspondence, I don't think it's a good idea to ask criminals why they did a certain thing, ref the reply to the scammer about his access being revoked. Yes, it might feel good to berate him and ask "Why did you do that?" But what if he answers? Would you really entertain valuable business time arguing with a fraudster?

In general, I also think it's a bad idea to entertain feature requests, unless the person is showing willingness to pay hourly for that extra bespoke service. I personally prepare for eventualities like that, so I can answer in a polite and productive way. "No, sorry we don't offer that feature, but if you want to enter the Bespoke Service Subscription for $10000 a month, then I can do everything you wish and mow your lawn!"