The old argument about security is mostly a wash now as well. (whereas with pre-SP2 Windows XP vs. OSX 10.4, you could legitimately claim that OSX was more secure.)
Now we have better third party apps on macOS than Windows but OS stopped advancing but who cares about OS anymore? It's all about apps nowadays.
My apps on macOS: Chrome, Thunderbird, OracleVM, Idea, Battle.net, Discord. Can replace Putty with Terminal ssh (I like Putty more, but that's not a big deal), can replace KeePass with text file (less security, but not a big deal either), can replace EditPad Pro with TextEdit (worse replacement, but I can live with it), can replace Paint.NET with Gimp. Not sure about foobar2000, may be DeadBeef.
And there's no software on macOS that I would miss in Windows. So that's questionable about third-party apps, at least for me. The only thing that I loved in macOS is its Terminal, because I know bash, but recently I learned a bit of PowerShell, so it's not a big advantage anymore. Also I can always spin up CentOS VM if necessary.
By missing that main difference the comparison is reduced to pure comparison of commodities, and of course the result is that the Apple machine is ‘unjustifiably’ more expensive. The Apple ecosystem is literally why people buy Apple machines rather than any other brand.
I’m also mystified nobody else brought this up.