Not really, you guys just lack of testing, that's the facts you can't deny.
I've seen ton of testing in my life, more than any of you. And I can tell you that I've seen raw purities, ranging on occasional basis to much lower.
I know in 96% of cases, these raws will test 96%+
But that 4% will always exist, an experienced source and brewer mainly public labs, who performed a lot of testing can tell you the surprising results they get in their life.
On average yes, my raws are way over 96%+
That's a single 90% among tons of +98%.
But when you see the few examples I posted in the past comment of test e, test c, and others testing 89%, 92%, 93%, you need to understand that these exist, the fact that you don't test enough and you only see the few tests posted here, mainly from us which are +98% doesn't make it a standard.