Of course not. Wasn't even mentioned.
You guys really believe a scam can just mean "take the money and run"? Have you ever actually witnessed a long-running scam?
Fact is: it would have been so easy to provide proof that they're hashing.
It wouldn't even need to be asked for, it would be the default behaviour of someone who would post news, include something to show off.
And they wouldn't be solo-mining, jesus christ. They would join a pool like every normal person would with that hashrate.
But that would have been verifiable, so they say they're solo-mining.
There has been a number of news now, and *never* was there any verifiable proof of anything.