Technologically, Window is great. There is no denying that, and if anything some the dated (+ insecure) things on it is the result of its own success, i.e. the app installation and management process, as it is hard to convince billions of people to do anything different.

On the other hand, the management of the company is the biggest problem with everything in and around Window. First, there is no single business model; MS sells you a 1 time licence for the OS itself, but then constantly try to harvest and sell your data (with ads everywhere in Windows 11), and if you want to do any office work then you have to pay a subscription for MS 365. Last but not least, they keep breaking things every few updates, i.e. I actually failed one of my university course because OneDrive decided that my report don’t need to exist after an update (in 2018).