=> “sudo apt install gnome-tweaks” 
No, I don’t agree with you.
In fact, Canonical was right to abandon Unity. But in fact they should have switched to Gnome Shell from the beginning without going through Unity desktop or proposed a new environment as Linux Mint did with Cinnamon but on the condition that it could easily be installed on any linux distribution.
This was the biggest problem with the Unity environment: it was too linked to Ubuntu, you need an environment that could be installed anywhere.
=> We’re not at Microsoft or Apple here, we want EVERYTHING to be shared. Not a graphical environment that can only be used stably under Ubuntu.
I remind you that Ubuntu is part of the open source and free community, which is the opposite of the logic of Microsoft and Apple!
For me, the Gnome proposed by Ubuntu is rather good except for a few bad choices that are not directly related to Gnome (impose snap, not want to propose gnome tweaks, partnership with Amazon…).