- About 90% of the (GUI) software ever developed? I'm happy to hear that there are quality Linux alternatives nowadays, but there's just many order of magnitudes more choice on Windows (and far less, but still more on Mac). For a lot of categories, this might change in the next decade (Electron and other cross-platform frameworks, tech like Proton) but for things like media editing or even image viewers, or until there is some tech to seamlessly emulate, this won't be a fight.
- Trivial app portability - I absolutely love the concept of portable Windows software. Have a single folder with configuration and binaries, that can run for sure anywhere (give or take a .Net/VisualC install) - and you can achieve this for 90%+ of all available apps. With a some sync tool it's simple to have the same (as in reproducible/copiable) work environment on many machines (in the context of ad-hoc gui user applications). I know this concept isn't really transferable to Linux (separated locations per app, "just build from source") and there are attempts (Snap) but due to the fractured scene and #1 it's not that practical for end-users.
- Hardware compatibility - cool that you didn't have device issues, but this could be because you just don't use non-mainstream hardware. Even when I did, a lot of special functionality was bound to (Mac/Win) drivers. Sure, not Ubuntu's fault, but still.
I think Ubuntu/Linux success stories are infinitely subjective - what you need as an end-user, how much time or patience you have, or how much you value privacy/lack of telemetry/security.