Cheers! You do not need to be 18+ to work for a company, or even own a company.
If you are suggesting that these two individuals (born January & February 2007) are children of the other individual (born 1970), how do they have a single month difference? Simple biology busted your myth.
Anyway, what's so bad that they are 13? I think that's pretty awesome. Maybe stop hating others and base a company yourself (especially if you're over 13 😃).
Just for your information, I've nothing to do with this company, I didn't even know it existed before I saw it here.