It's not true. Some still uses it extensively in the case of editing the last commands. But there is alternative way.
I am happy that they will remove this mode in the future :)
I am happy that they will remove this mode in the future :)
That gives you a buffer you can look through previous commands and use normal-mode commands to edit them.
Also, you don't need Ex mode to edit last commands. You can just press Up from cmdline.