If a very rich American went to South America for a decade and then bombed a building in Rio, he would have 'financial relationship' to the US via a number of investments. It doesn't mean that it has anything to do with US foreign policy, the government, or anything.
Osama Bin Laden was a member of a big, sprawling, super rich Oligarchic family in Saudi. Obviously, there were dealings, and obviously some Saudis probably funded some things here and there. Just like a Texan Evangelical Oil Billionaire might fund Christian Schools in Peru, which may even be good schools. But the charity run by a guy with ties to 'American Rio Bomber'.
Everything at that level is intertwined, it's not sufficient to suggest that proves anything.
The 'State' of Saudis is 'mostly a good actor to the outside world, even if they are bad in many ways internally. They allow the free flow of oil at market prices, 'per the deal' and don't align with China, Russia, or some other crazy state, and they are not trying to invade Iran or get nukes (though there are backup plans). And they play nice with Israel, not directly trying to start a war with them, or 'create' one between them and Israel. Most of their vast holdings are invested reasonably.Also, in the 'war on terror' which is actually a financial network and intelligence war, they have been playing 'on the right side' - as 'terrorists' are more dangerous to them than the US anyhow. So that's kind of what we can expect from them. In 100 years, hopefully things will be a bit better.