> I have no reason to suspect that Apple broke hardware they themselves sold
In fact my own 15" MBP late 2013 has a GFX750, which is no longer supported according to Apple Support [1].
The worst for me is that this didn't withold Apple from pushing the update, so running Mojave with an external monitor is hardly possible now.
> Nvidia is not a "good" company.
Agreed. Neither is Apple.
[1] - https://support.apple.com/en-us/HT208898