Private keys shouldn't just be given away casually. Asking for private keys raises red flags so thank heavens for people on the forum that can discern when something appears scammy.

There are people on this forum who - out of their good heart   - make it their purpose to expose scams/scammers, so while they do their investigation and point out some questionable portions of the announcement, it would be best to show proof that the one being accused isn't a fraud