is rust memory safe for grandma???

I used to help nonprofits with free or at-cost PCs and to help with that I accepted donations of old stuff. Most was scrap and I'd salvage a few parts and recycle the rest.

One PC was donated from a paint shop. Here's a picture that doesn't show everything, but enough. Yes there was rust on the PSU and even parts of the motherboard. Yes it was still running Windows XP and booted up fine. This was 2016.