Well as long as their Mum is smarter than their Dad then everything will be fine. (At least I hope so.)
Siblings are usually of equal intelligence.
I think you've managed to survive your trial by fire here (about a year ago), LMGTR. You're safe from that age requirement, if only because you're more mature than all of these bastiges. Funny that a 12 year old has a great deal more common sense than guys who are apparently as old as 22.
You're old enough to find the Shift key and not to be a moron. You're fine.