You'd be better off believing neither, but taking the participants' stories as what they believe happened.

Then drawing your own conclusions.

(Sorry, not picking on you in particular; I'm just quite annoyed to see this thread treating the incident as a spam problem to be solved technically. There were also people who really did not like Wil Wheaton, and then suddenly found him in their online home.)

My source is a whole bunch of comments on Mastodon that I read as the whole thing was going down, plus a bunch of more comments on Twitter talking about what happened after it was all over. I don't have specific links as I didn't save any, but there were a lot of independent sources on this at the time.

Edit: found a new tweet that summarizes this: https://twitter.com/eiwbm_cat/status/1035716245914624003?s=2...

Wil does admit to some of it: "And for what it’s worth, the part of me that wants to apologize to the people who ended up [the blocklist] by mistake is overwhelmed by the part of me who was attacked really viciously by a lot of those people and feels like maybe blocking them wasn’t such a bad idea, after all."

That directly supports the narrative that he publicly blocklisted some innocent people, hasn't apologised and is being mobbed for it.