Rich Felker@leon_p_smith @futurebird SO/SE invited it to get *so much worse* by adding tons of sister sites of the form "4chan, but respectable and gamified". Things where people would necessarily be expected to treat bigoted opinions as valid answers, like basically all of the religion topic sites, as well as politics, economics, history, etc.
If they'd stuck to technical expertise topics, they wouldn't have encouraged these type of folks to move in.
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