If I have not misunderstood all the ip addresses used seem to come from a limited area. Anyway my advice is to use an OS like Tails under tor on a USB key to manage your wallets. I know I have a certain security mania. Even qubes OS is not bad, indeed.
yes this topics FUD is about doing the crawling using known connections to then find more connections (its how the network normally works)
its not about some entity just random bruting every IP of the entire internet to test which of every internet user is using bitcoin