This has happened once before and they reversed it. But they said this last time too:
The discussions that have happened in various threads on Lemmy make it very clear that removing the communites before we announced our intent to remove them is not the level of transparency the community expects, and that as stewards of this community we need to be extremely transparent before we do this again in the future as well as make sure that we get feedback around what the planned changes are, because lemmy.world is yours as much as it is ours.
Transparency is there in the sense that the modlog makes clear that a lemmy.world admin blocked the community. If it were Reddit we’d never know how, just that it is blocked.
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I’m aware of this broken promise. My comment is speaking specifically on a limited technical basis when comparing it to Reddit, which is what I mean by “in a sense”. I hope this clarifies it for you.