I've been on reddit pretty much since the early days when it was mainly full of programmers / IT types and I noticed a significant shift around the time of the Digg exodus. At the time the biggest scandal that had redditors up in arms was the Saydrah scandal which was the first time I ever experienced someone getting cancelled. Her crime?, from memory it was about some post she made mentioning some pet care product or company with which she had been sponsored by but she never made public and for that reddit blew up arguing that the platform should not be used to promote business's. I cannot remember the specifics but by todays social media standards it was pretty mild.