Does kind of suck having someone pull the rug out from under you and an overall positive you were trying to do for the community so they can get a quick payday... but getting scooped like this happens in life. Assholes are gonna asshole, because "if they don't do it, somebody else will".
And sure this is the last discovered hypervisor bug, but in a software as complicated as the PS5 firmware, you're gonna find more eventually, especially if/when they add features.
Nobody thought a software bug was ever gonna be found in the XB360, and now we have BadUpdate taking literally seconds to exploit your console from a USB - I mean it did take 20 something years for the right person to come along and try it, but the point is it'll happen eventually.