On the technical side of things, I’m more surprised that a Doom9 user has not yet made a version of “FindVUK” to publish the UHDBD VUK’s from MakeMKV the same way they have been doing with Fab’s products on normal BDs for years.
On the ethical side, it will be in the eye of the individual. We know that AACSLC argues it is wrong to hunt for keys on their discs and that MakeMKV, AnyDVD, DeUHD etc are bad for profiting off their hard work that they are trying to protect. Similarly, I’m sure Mike will find it wrong to hunt for keys in MakeMKV and that anyone who profits off his work is also bad, or that FindVUK does the same to DVDFab.
For me I’ll sleep easy as I pay for my discs and also for MakeMKV, AndDVD and DeUHD Licences. I’d actually prefer NOT to have to pay for 3rd parties for licences to play my discs the way I want… unfortunately, I can not see AACSLC allowing that to happen anytime soon even for a fee! So instead I happily pay for the licences required to allow me to do this. If you do find the work of the studios and software (that allows us to play our discs the way we want) then supporting them by paying for the cost of the discs and the licence fees to the SW authors makes sense and keeps the development alive and maturing. If you don’t like the practices of AACSLC, MakeMKV, AnyDVD, DeUHD, DVDFab etc, don’t give them your hard earned.