It was much earlier.

In 2010, a christian fundamentalist on youtube started to overanalyse Lady Gaga MVs, then moved onto other artists and eventually other media. He was pretty much the forerunner of those wokespotters (except not even SJW was a snarl word at that point), and yes eventually he dabbled into racism too, but he was also openly "not antisemitic" (he loved the sinner and hated the sin). When he first posted his videos, people, including me, thought it was a satire of conspiracy theorists. He was dead serious. I remember him nuking his old videos and making more sane sounding ones once gamergate hit mainstream, even backpedalling on his earlier analysises pointing out Freemasonry symbols and David Stars in media.