Sadly, I have to agree. There have been just a few of really good features in Windows after 7: app sandboxing, first party VR support (if not for that, we'd only have locked down VR platforms like PS VR and Oculus), the new Mail client, and using voice to set reminders and alarms (when it works). Maybe better support for tablet mode in Mail, browser and the Start Menu, and the dark mode lately.
Outside of that list, I'd struggle to name a single thing in Windows, that became better. Number of bugs certainly increased. Specifically, search and language switching are the worst offenders.
Outside of that list, I'd struggle to name a single thing in Windows, that became better. Number of bugs certainly increased. Specifically, search and language switching are the worst offenders.