Windows peaked starting with Windows 2000, then XP, (once they finally patched it some), and 7 was great, but you could just barely see where they were starting to take control away from the user and administrator.
Windows 8 was the start of the huge downward spiral and it has been crap ever since. Sure they sort of brought back the Start menu in 8.1 and 10, but it just isn't good... and after over five years, I still hate it and find it clumsy as hell. What's wrong with letting users still use the "classic" menus and control panel applets if they want to? Why force everyone to this mono toned, feature-lacking UI? So you can stick your damn ads in it? Is that the "Microsoft Way" now?
Microsoft has been taking control away from the user and administrator with every new iteration of Windows since v8. As someone who has used Windows since 3.1 and has seen the rise and fall of Windows, its sad to see it going this direction. I used to like Windows, and I used to defend Microsoft. The created the business standard with Microsoft Windows NT based OS's, Microsoft Office suite, and Microsoft Exchange and Active Directory services, and suite of services included with Windows Server. It is now frustrating and difficult to use all of the new versions of these products from a power user and administrator point of view. You either have more clicks to get to something, or can't do it at all and have to use Powershell. Don't get me wrong I'm not against entering commands, but DON'T TAKE AWAY UI FEATURES THAT USED TO BE THERE!
Microsoft seems to just be dumbing down their OS to MacOS level, both visually and feature-wise. There is a reason MacOS lost the desktop OS war and it was because they wouldn't cater to the power users and administrators who run our business networks, and now M$FT is doing the same crap, and will eventually lose business networks. They are already leaving, problem is nothing underneath is really all that capable as a full desktop OS except Linux, but you have to have expertise to do this, and the world is dependent on Microsoft Office which they won't make for Linux because they know the second they do, over 50% of business would switch to Linux and dump M$FT Windows licensing, their primary cash cow.