There is no discernible reason for the option to be disabled for PC. I have a few ideas for why, with the most likely being because they want to offer padded numbers to stockholders and execs so they can pretend they're doing better than they are while the playerbase finds ways to hate each other even more.
90% of my BS deaths are to a consolebot. I'm talking about the "I was 15 feet behind cover" deaths and the sniper bullets that can curve past walls to brain me while I'm still behind cover. This isn't even bringing up the brainlessly obvious fact, it's a FACT, they can always win at range due to the recoil and bloom buffs they receive, and the several other shadow buffs they enjoy due to being gods favored people.
The other theory I have is that EA has no idea what they are doing and turning off crossplay just... turns off all the servers. I'm sure that when people read that, they will be like me and think "you know... maybe..."
