Apparently the "auto-aim" in SWBF1 was left on, it was a console leftover, since people couldn't aim as precisely with a gamepad as with a mouse, they gave them a bit of help. When people discovered it, they rationalized that this could be a good thing for joystick users, but ultimately it was seen as unfair, leading to people insisting on it being turned off.
They might have turned it off by default in SWBF2 PC though... I've always had it off on my server, just in case.
I imagine you've guessed right for the other options. That'd be my guess...
Though I think "bootlaggers" is more literal... "boot" as a synonym for "kick" rather than boot as in "booting up" (loading the map). So it is an auto kick for people who lag too much after joining.