Their reputation has been tarnished. Yes, they got some money out of it, but it's not like they were exactly poor to begin with. I'm not sure they exit the ordeal victorious.
'Idea people' that hire 'tech people' don't get it. Lots of people have ideas for companies. The twins were not the first people to think of creating a friendster for colleges. They don't get to own 50% of another company because their company was delayed by a few months.
I think they should get Mark's shares. It's not that their company was delayed a few months, it's that the founder of another company came in and sabotaged their company long enough to gain critical mass. In fact, I'm surprised what Mark's did isn't illegal.
Openly, the fact that silicon valley attracts these sorts of people is why I stay very far away.