I have realised the problem here

[Alberto Salvia Novella]

After talking with some GNOME users and developers I have realised 
there's a common misunderstanding.

The goal of the GNOME Shell is to focus on one thing at a time, but 
normally when I have multiple windows or tabs opened all are related 
with the same task at hand. They are simply different stages of the same 
process.

0 -> 0 -> 0 -> 0

If I want for example produce multiple videos, having all those windows 
open eases me finishing one video at a time, since I can quickly change 
between stages.

(https://en.wikipedia.org/wiki/Single-Minute_Exchange_of_Die)
(https://en.wikipedia.org/wiki/Cellular_manufacturing)

So here's the problem: you are confusing finishing things one by one 
with visiting the tools one by one. If you really care about focus you 
would want to make changes between tools as easy as possible.

Thanks for your attention.