It is, but I'm not sure it's for the reasons you are implying. First and foremost, Saudi money and oil money is an enormous part of global wealth /full stop/. That deep degree of intermixing happened decades ago; there's no putting that cat back in the bag. Asking a question like this to VCs who you are ostensibly trying to make a good first impression upon is akin to telling someone that you don't have sex on the first date. Perhaps you don't, but phrasing it that way is a seriously tonedeaf way to signal it.
If your primary motivation as a founder is to raise "untainted" money rather than money on good terms and from partners who can help you, I wonder whether you should be fundraising for a VC funded startup at all. This isn't meant as a dig at you -- I just think that the VC funded startup path is often considered a default path, and there are a lot of founders with amazing things to offer the world that might benefit from alternate financing more than VC. If you're concerned about LP fund sources for VC, then alternate funding may be something worth considering.