You do not get it. It is the new big meta shift. Lets see how can players abuse call in meta without commanders 
Offtopic, sorry: Abusing isn't the same as using meta. Using meta is just using what's the best way to play to win. However to win you will still have to play this strat to perfection. Abusing is using a filthy bug to win, for example the 100 rounds per second sherman. It's something that's not counterable by playing better.
Wanted to make that clear
