If you've never played a CoD at all, I would recommend just playing the campaign (might be buggy atm though). It usually teaches all the necessary skills in order to be at least of some use in PvP, even when you aren't a pro in shooters.
Other than that, the Zombies mode is nice.
I feel like that wouldn't be within his criticism. The way I understood it, it was that he, and I agree, dislikes the i-frame dodging-centric design because it relies heavily on something invisible like the I-Frames.
If there was an animation, a flourish or some other visual marker it would help tremendously.
Iirc EA lost the exclusive game rights after Battlefront 2 (2017).
That's also why Ubisoft is making an open-world star wars game
Federated means that any instance that is federated with them receives their content and can bee seen on that instance.
Defederated means they are not federated anymore, thus blocking both users and content.
It's usually done to combat content you don't want on your instance
There is script extender as well now. Crazy shit