The community was outraged and the artist was temporarily suspended for not coordinating this decision with WOTC, but ultimately they had no grounds to sue for change or compensations because of these terms.
That's... not how copyright works. The Fan Content Policy isn't a contract. WotC could demand you take something down, but they can't unilaterally say "This is mine now".
TBH I'm very confused. I thought nothing that Linda said was inaccurate legal analysis, add to the fact that they consulted lawyers before publishing their piece, and that the conclusions were mostly in line with the lawyers in the forums are saying. So them going so hostile against the journalist that broke the news seems pointlessly aggressive to me.
The OA people seem to have some weird unstated agenda here.
Virtually all their comments on it haven't related to the legal situation at all, but to their opinion of how WotC does business, that it's fine for WotC to do whatever they like to whoever they like. It really seems to me like there might be a bit of personal bias involved, especially as they're inexplicably going overboard in attacking Linda particularly, which is kind of creepy, and doesn't seem to be their "MO". Especially as she was "just the messenger" in this situation, and yes, this stuff did go past G/Os lawyers.
I think OA are probably going to suggest there was never any threat of deauthorization, and that it's "only" a poison-pill contract, but that's not how WotC was presenting it, and it's not how the 3PPs in the negotiations have appeared to understand it - c.f. Kobold etc. - then go on and just blather about how it's "totally fair and normal really", when, like, obviously it isn't, given the OGL 1.0a. It's a position I've seen literally one other person adopt - this laughable idea that if a less-permissive licence would have been good if another, more permissive licence had never existed, then the less-permissive licence is obviously fine.
If they're going to get into stuff like suggesting a 25% revenue cut is "fine", which is not a matter of law, but a matter of business and ethics/morality, and those outside their actual purview, I think they'll get actual blowback themselves.