Yep, that was when JKR was talking about helping refugees and lefties were using the most boring milquetoast HP memes.
Probably has a lot to do with the age of these goons. Most of them during that time were young and very left leaning, whereas a lot are probably moderate or even conservative as they grew up. It's all about confirmation bias, one can easily twist this franchise to suit rightoid memes.
I'd like to add.
Growing up during Potter mania post 9/11, Newgrounds days and others created new brand of scorned Trekkie potterheads.
Politics were different and internet was busy trolling both furries and Potter fans through orchestrated spoiler campaigns
A TTENTION SHOPPERS VOLDEMORT KILLS SNAPE.
Internet was largely anti degeneracy, weebshit, community against community.
All of which were somewhat right leaning early Newgrounds, 4chan and even Something Awful were part of trolling the new left leaning kid around the block, seen by afro wig guys in suits yelling "SNAPE KILLS DUMBLEDORE, DOBBY DIES!" after that gay shit was introduced in the books JK Rowling gave left wing opinions.
Oldfags that were around ten plus years ago grew up and newfags completely co opted both 4chan and SA with pony shit, degeneracy and cuckoldry. People didn't give a damn about Potter since despite being multi billionaire franchise wasn't bad as newcomers and old guard was gone, degeneracy was the norm, tranny bullshit was pushed everywhere including aforementioned communities.
At that point ANYTHING even slightest to right, meaning people with liberal ideas, free speech and so on who dared to criticize troons was the next Hitler.
Moderately right kids who who hated Potter, furfags and Sodomy grew up and political compasses changed as the time passed while clown world was busy changing definitions.
We grew up and world changed to boot. I bet you didn't guess this couldn't happen 20 years later. Think about that for the moment and feel how old you are.