This simply swaps one set of dumbed down UI elements for another set. I can only assume from this tip that you're a casual / home computer user. Some here are not. I am not. Cliff is not.
Metro was discontinued in 2012. You are probably referring to the new Start Menu, which can easily be turned off.
https://techland.time.com/2012/08/02/metro-no-more-windows-new-interface-suffers-trademark-woes/
For the casual user, perhaps there's nothing wrong with Windows 10. For developers, IT professionals, power users, technicians, etc. the Windows 10 UI, with or without the 'new start menu', is indeed an incongruent mess.
Complaining about Windows is so 90ish. There is absolutely nothing wrong with Windows 10 64-bit. You do not need Classic Shell to make 10 look like 7. You probable still like Chevy Malibus from the 70's. BTW, I am a 70 year old geezer who has absolutely no problems with the latest and greatest operating systems
No one here is complaining about Windows because of some fond memory of doing so in the 90's. The complaints are, in part, about Microsoft's decision to altogether scrap the Windows 7 user interface - a UI that took more than 15 years of incremental improvements to iron out various inefficiencies and inconsistencies to become a well sorted, easy to use UI, for anyone from the average home/casual user to industry professionals - in favor of one that's arguably worse, in many ways, than Windows NT was in 1993.
The search tool and Windows keyboard shortcuts will allow someone who needs this convoluted mess of a user interface out of the way to be their most productive. The existence of these tools does not excuse Microsoft's abandoning their own progress in a poor attempt to look more contemporary.
I'm glad to hear that Windows 10's user interface is working for you. Me? I can only assume that Microsoft did not include industry professionals in their focus groups (save perhaps for their own developers, folks not likely to call their own baby ugly) when designing this mess.
I've been in in the computer industry since 1980. I have worked in data communications, software development (UI design for 5+ years), IT tech and management, and Information Security. I am retired now but I still provide support for a select list of clients (hardware, OS, software, and data communications support), none of whom are happy with what Microsoft has done to the Windows UI. Supporting this mess is more time consuming than it need be by far. Many of my clients use Open Shell (Classic Shell) to restore some of the congruity and efficiency lost when they were gradually forced to 'upgrade' from Windows 7 to Windows 10.
Windows 10's UI seems to cater to those who browse the internet, send/receive email, use Word and Excel, consume media, use content creation software - casual users, content creators, etc. Even here, the UI is wildly inconsistent. The more productive one attempts to become within Windows 10 the bumper the ride becomes.
You're welcome to your own opinion, of course. That your opinion doesn't line up with those of industry professionals does not invalidate their opinions. If you're happy with Windows 10 - fantastic! Glad to hear it. For those of us who have been boxed into using Windows 10 for productivity, or now have to support it, it's not working out so well.
/rant