ok sign as a white supremacy symbol started as a large scale troll on 4chan years ago. the point was to go in every big forum, social media, etc and populate this idea that white supremacists use this sing like a secret handshake they can use in public without being known. it was eventually picked up by some dumb liberal reporters and popularized in the liberal spheres, propagated by useful blue check idiots on twitter and now, like 5 years later, half the country believes it. it's one of the most successful trolls ever. they also did the "it's ok to be white" thing.
the point was to show how insane the left has become, that they would not think critically for one second and just buy everything they are being told as the truth.
AND IT WORKED.
Which is why it's absolutely cringe whenever people use it as argument. so when you see dudes using it, it's not "we're white supremacists hur dur", it's "let's laugh at those dumb libs cause it triggers them".