If Apple designed 'Windows 10' (which they wouldn't) it would probably look exactly the same as MacOS and not like anything in the video.
Ya, just three words.. "It would sux." The registry still exists, to comply with backward compatability, despite the push for self contained apps... you may as well just keep using a Mac. That way you eliminate more than just registry issues. However its only due to the small market fragment of Apple that we don't have the number of malware as Windows has. (let alone the problems of third party)
I think you haven’t thought much about the issues and you’re grossly misinformed with a good dose of contradictions.If Apple designed Windows 10 it would be just like Windows 10. Why? Oh! Because they're both pushing proprietary graphics APIs. They're both selling cloud based solutions to our privacy's detriment, although Windows is the clear victor in that regard as it doesn't shove it in the user's face like Apple does, and heck they're doing a great job with their Azure cloud based solutions for enterprise unlike Apple. When it comes down to it, Windows 10 & macOS are frighteningly similar, although I'd hazard Microsoft is veering further in the right direction by embracing the open source community. Overall, I use macOS as my daily driver because of it's integration with iOS, thus enabling me to actually get reminders for the events/appointments I schedule on either device. Which is nice. But eh. I'm not a big fan of either company. I eager await when both companies go too far and the mythological future event known as "The Year of the Linux Desktop" comes to pass.