From what I can tell, it may have taken MS a while, but it seems like on the Windows side of things, amd64 emulation seems to work pretty flawlessly. There are still issues (i.e. Qualcomm's drivers not being as good as Nvidia's/Intel's/AMD's) but at least on the Windows side of the equation everything seems to work now.

Because MS doesn't require special emulation hardware like Rosetta2 does, I expect amd64 emulation on Windows to last a lot longer than it will on macOS, too.

> Windows NT has run on multiple architectures since day one with x86/PowerPC/Alpha/MIPS flavours, however x86/AMD64 has won over them.

True in theory, but in practice you're not going to take a Windows NT PPC .exe and run it anywhere today. Apple's done a decent job with Rosetta and Rosetta 2 doing CPU emulation when doing the transitions but I don't think they've ever targeted the same "You can run Windows 95 x86 .exes on Windows 11 x86-64" backwards-compatibility goal.

My experience with OSX and iOS backwards compatibility is similar to the post author's: things might break once in a while on a long timeframe but it's usually pretty easy to rebuild for a newer version. This works fine so long as the company that owns the source code actually still exists and is willing to build a new version.