For those interested in the actual history of the Game Boy, it's actually quite fascinating and very Game of Thrones.
When presented the final prototype of the Game Boy, Yamauchi basically said the screen was crap and claimed he couldn't see anything. He cancelled the project right there.
Yokoi became so depressed after this that he contemplated suicide (per his own biography).
Yokoi hated the Famicom/NES because he felt it took away his standing in the company, he felt Game & Watch saved Nintendo by being a huge success and he had been with the company since the 60s, he resented the new success of the Famicom as taking over the entire company. I think he looked down on people like Miyamoto because he had been at the company a lot longer than them and was not thrilled that they were now the stars of the company.
Other designers on the Game Boy felt they were being set up and back stabbed by other Nintendo employees (notably R&D2 or essentially the "console division" who was working on the Super Famicom). Lots of people inside Nintendo at that time hated the Game Boy and thought it was a piece of shit hardware. Game Boy designers felt those people were getting into Yamauchi's ear and saying the system would fail and embarrass Nintendo. There were some in the company also who felt Yokoi may try to replace Yamauchi as Yamauchi was getting older.
Yamauchi wanted to stop making portable devices entirely by the late 80s and just focus on the far more popular home console division, but the Super Famicom development was taking longer than expected and that essentially saved the Game Boy project.
This shit is legit bonkers, lol.
You can also totally see how things like the Sony relationship and deal for the CD-ROM went completely haywire, Nintendo seems like a very chaotic company internally in those days with lots of in-fighting and different factions trying to wrestle control under one monarch like leader (Yamauchi).
