Is shit hitting the fan already?
Write this down - ALL perpetual mining "bonds" that pay based on FIXED Mh are turds and are guaranteed to lose their value.
Buy "turds" ONLY if you believe that difficulty is going to drop.
All perpetual mining bonds are expected to lose their value in the long term, given the expectation that difficulty will continue to rise over the long term.
But they are bets on how fast difficulty will rise, and it is possible to buy them for less than their future value.