It's not exactly the same, since yes - many of those most involved in the ugliness were the same toxic posters who had been ejected from Reddit. More notably, it was different in that it was a single, monolithic site rather than a federation of individual instances.
However, the broad dynamic of it all - the way in which the destruction played out - was, to ne, disturbingly similar to what's happening here now.
It all started with posters banging the drums of fear, and specifically fear of some external actor that was going to move in to the site and destroy it. Exactly as is happening here. Then that drumbeat of fear started to alternate with the repeated refrain that "we" need to do something to protect the site from the threat. Exactly as is happening here.
The next step was to "do something." Specifically, a group of people pushed for a broad community commitment to opposing the invader, then appointed themselves guardians of that commitment. They began harassing and brigading people and subs that they claimed to be agents of the threat, or simply were accused of being insufficiently committed to "protecting" the site. And it was all downhill from there - the site tore itself apart from the inside.
Obviously none of that has happened here. Yet.
And yes, I'm aware of that article. Really, at this point, it's pretty much guaranteed that anyone who's spent even a few minutes on the fediverse is aware of it. since every single discussion of this topic brings another 37 links to that same article.
It does make some salient points, but it too is starting to feel a bit like astroturf.
And I find it a bit disconcerting that the focus seems to be on the threat the article outlines rather than the solution it prescribes:
Fediverse can only win by keeping its ground, by speaking about freedom, morals, ethics, values. By starting open, non-commercial and non-spied discussions. By acknowledging that the goal is not to win. Not to embrace. The goal is to stay a tool. A tool dedicated to offer a place of freedom for connected human beings. Something that no commercial entity will ever offer.