1) they are useful in specific situations, and for outlining trends. i dont mean to come off as 'these statistics dont fit my point of view' but using a small sample size to quantify beliefs of billions of humans isn't feasible
So because islam is so large, and we'll never be able to tackle a "meaningful size" of samples, all the statistics are inaccurate?
2) neo national socialists can believe in whatever they want because im okay with freedom of speech and opinion. im not okay with a neo national socialist shooting up a black church, but that doesnt mean i use it to justify some sort of punishment for the other 99% of neo national socialists not involved
If neo national socialists started mass invading countries and started pushing national socialist bullstuff, alongside neo national socialist terrorism becoming a thing, then you might have an apt comparison.
Because in this situation my point wpuld be the same.