I don't know a single person using Cortana, so it's not a surprise I guess. At least the push to use it in Windows will finally go away... A bit too late I have migrated to Ubuntu earlier this year... Puting an end to 20 years of Windows on my computer. Farewell Microsoft.
Does anyone use any voice assistant anywhere? Other than people trying it out for the first time, I've literally never seen it in the wild.
Cortana's not too bad for the simple stuff like getting the outlook of the day or setting up geofenced reminders (remind me to unload the washing machine when I come back home).
Anything more complex absolutely fails 100% of the time, with this ridiculous behavior most assistants have to default to "here is what I found on the web". Why on earth would I want you to search for what I asked you to do? Wouldn't I ask you to search on the web if I wanted you to search on the web?
I think that's the downfall of most voice assistants I've tried. Discoverability is poor, which wouldn't be a problem if the feature set was not limited to the basics.
That being said it also loses a lot of its appeal by requiring a physical activation (either clicking on the app or on my headsets button), since Google removed the possibility for alternative voice assistants to do that. Compared to "hey siri", that schnucks.