Wow, that is evil! I can see exactly the thought process behind this change as well... People buying M-Disc's will not notice that they've been sold BluRay di

Wow, that is evil! I can see exactly the thought process behind this change as well... People buying M-Disc's will not notice that they've been sold BluRay discs for decades when they start to decay some day. It's a malfeasance which will only be discovered in the distant future once the discs start decaying, and will be someone else's problem by then. Meanwhile whatever product manager will have made their promotions for cost cutting and increasing revenue. tl;dr only buy the M-Disc's which are rated for 4x write speed.