The pictures you linked are "Hash Tips", not bleached buds. There are threads on the forum if you do a search.
Okay, here we go...
"Hash Tips" are not real, it was a sales gimmick that Hydroponics Hut used to help sell their brand of LED lights.
What they had originally pictured on their site was a pic of a bleached out bud, that had built up an abnormal amount of trichs on the pistils.
This caused those pistils to turn brown and stand out, thus making them look like tips of hash growing from the plant.
Fast forward to now (2 years later) and we can see how most people didn't understand what they were looking at in the first place, and confusion has set in, where some folks now think that bleached buds are actually hash tips.
Thus is the danger of false advertising on the internet, it lives on long past it's usefulness, as even Hydroponics Hut no longer discusses hash tips in their advertising.
As for threads about hash tips, yes, they exist.
But try reading past the first page and you'll see that the thread quickly loses steam as more and more people point out the obvious falsehoods about bleached buds and hash tips.
As for hash tips, no, they do not exist.