This in the perfect case crypto market will still be interesting by that time and all six 3090 won't require service/warranty/RMA. Because, if so, the ROI will go from 722 days to God knows where.
100% scam, but I am fairly sure there will be tons of imbeciles who will bang their personal data / hardware, hoping to make 1 more $ per day.
And because of this, it's definitely good news.