How do you think, why Shuttleworth wanted to build his own device and why after few big attempts of bugfixing and porting (on Meizu) Canonical just closed the project?
Well, considering I have first-hand experience in the matters you are asking about, I know full well why things were done. You posting condescending questions on here isn't going to change the past.
You probably don't understand what is going on the hardware manufacturing. And why Android's (lets call it) Convergence works well throw the dock stations with few gadgets?
Again you resort to condescension as your means to try and make some point, without making any point. You have no idea what other people do or do not understand, so please do not keep making such assumptions. And I have no idea what you're asking about in your query about Android here. Android doesn't officially have any "desktop mode" thing, until Android Q (10), which won't be released until later this year. If you mean Samsung's thing, it's a separate matter.
Well, your best device for convergence is still nexus 5 (2013). I own this device. I'm trying to use it as my single daily driver. But It's pain.
Simply displaying windowed mode on an external display, is not convergence. The Nexus devices, and BQ M10 tablets, are currently the best options for having external display support (as these are the only currently supported models which have wired external display connectivity). This has very little to do with convergence. Convergence is being able to run the same shell and apps, on a broad spectrum of devices. It is not simply about having external display support on phones.
Cmon, we still don't have copy/past option between apps.
Yes we do. It works mostly fine. There are some bugs with different toolkit options, but your being condescending and rude on here isn't going to fix them. You are welcome to make PRs to fix bugs though.
We can't use devices even as media players, can't watch (!)480p video online, can't normally send and recive files throw (!)bluetooth protocol, can't even upload screenshots in this thread...
Again, your bitching about things on this forum is not going to fix them. The Nexus 5 has a unique bug with video playback. It works fine on other devices. All I see you doing though, is whining and acting like you are better than the few of us who are giving some of our free time to work on the project and make it better.
It's simple user's point of view. System you are building can't download and set up maps. I have to use PC to get offline navigation. Web apps will stop working if something'll happen with network.
99% of the apps people actually use require network connectivity. Again you are acting like you know more than everyone else here. If you think you can do better, then go build your own alternative, and stop wasting our time by coming in here to insult and deride us.
*I continue to get issues even writing this message. The keyboard or the dictionary (i'm no sure) sometimes places previous word when trying to capitalize present.
This forum is not an issue tracker. You are welcome to open issues on GitHub, but do not spam the forum with your personal opinions on every tiny annoyance you might hit while using UT.
But then what and who this os and devices are for?
Apparently you think it is not for you, and that's fine. You are welcome to go use something else. Nobody is forcing you to use UT.
As I can understand, you and your team coudn't yet "bring the convergency" to any new device.
You keep confusing "convergence" with "wired external screen display." They are not the same thing, and continuing to act as if they are will not make them so. The latter is only one tiny feature of the former.
Why, what's wrong?
Clearly it is you who does not understand about how hardware is manufactured, nor how software is developed. Ubuntu Touch is a community project with very few developers. If you want that to change, you are welcome to start developing, or to make donations to UBports, so that development can be funded.
If you don't like UT, and will not change your ways from being so rude, then please just install something on your device, and let us alone to make the system better, rather than having to deal with your rudeness.