How is less than 2,5% a gigantic number?
If you multiply that with the chance of someone having G, you number will be really low.
and I get my numbers from scientific articles on PubMed, sciencedirect etc.
Knowing someone with G is anekdotical evidence btw.
I will repeat it one more time though. Being afraid of getting superG while punting is equally irrational as being afraid to die in a planencrash. There have been more plane related deaths in 2018 than newly diagnosed superG infections in 2016. (No data for 2017 or 2018)