It's been pasted multiple times in the comments, but here it is:

https://www.reddit.com/r/StableDiffusion/comments/103upr6/co...

If it was just one of those examples, sure. But there are multiple things that are 'arguably racist' combined with apparent activity on 4chan, I'd say it doesn't seem just coincidental.

We don't know whether this has anything to do with the suspension though, everything that's being written is all just theories.