I am pretty sure that everyone everywhere realizes that ROI is a unicorn and has been a unicorn for months. No asic anywhere from anyone including unicorns that are only promised to be born will ever make a positive ROI in nominal btc terms. Those days are long gone.

I am not sure why every five minutes someone feels the need to be noticed for pointing out that device "X" will never achieve positive ROI. Duh, and the sky is blue. It is certainly not an argument that matters for the tens of thousands buying asics all over the world. Unless you assume that anyone who buys an asic is an idiot, in which case, congratulations on being so much smarter than everyone else. I hope being that smart translates into btc for you.

We all agree that asics can achieve a positive ROI in fiat terms assuming that the value of btc increases over time, and that in most cases you are better off just buying and holding btc. Most miners however are quite happy with the fiat ROI and are not as concerned with the btc ROI. They have chosen not to buy and hold. I respect that decision.

Fiat ROI is not only possible, it is likely. These people are not idiots, they just choose a different path for their own reasons.