So i did the math, like you should have done. Your title is very misleading !
Your winrate first 430k hands is 3.7 BB/100
Your winrate last 250k hands is 2 bb/100
Your overall winrate is 3 BB/100
The chance of running 3.7 while actual is 3 over 430k hands is 28%
The chance of running 2 while actual is 3 over 250k hands is 27%
So at first it may seams weird. Especially since your title is a total lie. (people are idiots)
The variance is totally fine within the normal chance.
http://pokerdope.com/poker-variance-calculator/
(variance set at 100, with tourney's this is probely higher ??)
So next time when you accuse someone of trolling, dont be the troll yourself !!