The article makes it seem worse than it really is. All they seem to be doing is moving that functionality from being the default to an option that you enable.
Personally I heavily rely on the middle click to paste, especially with my docker workflows. Rather than having to click "CTRL+SHIFT+C" then "CTRL+SHIFT+V" every time, I just know whatever is highlighted will get pasted when I hit the middle click button. It's a subtle difference that saves maybe 1-2 seconds but combine that over the course of months and all of a sudden I've saved myself an hour with more efficient copy/paste.
Personally I heavily rely on the middle click to paste, especially with my docker workflows. Rather than having to click "CTRL+SHIFT+C" then "CTRL+SHIFT+V" every time, I just know whatever is highlighted will get pasted when I hit the middle click button. It's a subtle difference that saves maybe 1-2 seconds but combine that over the course of months and all of a sudden I've saved myself an hour with more efficient copy/paste.