Me neither, so why can't they be nice people and publicly release the source code to some of their old games and software under a free software or open source license, it doesn't mean also having to publicly release all the assets and other data from the game
Because in one year in one small country in Europe they probably resell people enough copies that they make there what everybody posting in this thread combined will make in a lifetime.
The best Nintendo console
I have encountered some questionable opinions in my time floating around the world. I think you might have just taken the cake though, at least until someone wanders in claiming the virtual boy was.
The decompilation is not illegal but this is
You keep saying that but it won't make it true. Or at least if it is legal then so is my zipped copy of the ROM, or maybe complete disassembly I dumped from an emulator that could in turn be reassembled on the spot. It still contains Nintendo's assets (levels, some text, graphics, don't know if it has music but maybe that too), a direct derivative of Nintendo's code (the decompilation part speaking to that one) and was made with anything but clean room style efforts.
About the only thing Nintendo can't do is take the code and use it themselves without sending round the boys to first say "giz rights to it and your grandkids won't still be fighting the lawsuits as they sit on their death beds". Though at the same time with it compiling to a 1:1 recreation of the ROM then you will have a mightily hard time proving that one (I have some ideas on how you might, and some things the decompilation project could have included that would give some idea but they are thin and I would hate to argue them).
That Nintendo is being as circumspect as they are about it all has me curious but that does not for a moment mean it is not all but an open and shut case if they did want to go after them. Personally I would love to be there to watch the case when the defence says "erm maybe interoperability and for disabled people" to have Nintendo* then have to argue that emulators with texture replacement packs are a thing, that emulators themselves have existed for over 2 decades and today can run on mobile phones.
*I assume we have all read
https://www.nintendo.com/corp/legal.jsp#emergence before. If not you are welcome for the giggle.