This is so dramatic lol. It isnt that complicated.. I'd argue that PR is just as complicated if not more than vanilla arma. The complexity usually comes from mods, but even then it isn't that bad. You wont be playing it alone, so just do what the rest of us do and ask one of us how something works if you're unsure.
back2la is a little different, yeah. I think it builds on SEF. CS Paintball gun has been nerfed quite a bit
I've been rocking less than lethal shotgun and gas nade launcher. Works pretty well.
I'm a network architect (network engineering) at an ISP/Cloud company in the UK.
Definitely requires reasonable fundamental math skills. Understanding how the protocols work require it a little too. But the day to day of the job barely has any math. Nothing complicated anyway. Its a good career. Glad I chose it. Some cool stuff happening in the field too. But it might have a reasonable amount of math at uni.