I never saw an announcement to that effect, though I don’t have an account on sh.itjust.works. Elsewhere in that thread other admins voiced strong support for Lemmy.ml so there may be quite strong push-back to such, even being easily reversible, even for strictly new accounts, even though it makes the issue opt-in rather than currently where the have to expend ENORMOUS efforts to opt-out. Also iirc the issue of site content warnings came up and took focus in the conversation to see how that might play out in the then-future.

People have been asking for such tools for 2 years now - here’s a post from ml itself asking for finer-grained controls. And another that said not yet, but given all the things they listed seems like it would say the opposite today (e.g. suppression of anti-ccp views appearing on ml, which I suspect was happening even back then too).

Despite that, no major instance has wanted to separate itself from ml. This is their software, apparently it’s their network too. We don’t even have a name for the part of the Fediverse that isn’t either Lemmy or the Threadiverse that would by definition include Meta’s Threads (Mbin and PieFed are too small, and Sublinks non-existent yet). And a Google search of the word Lemmy pulls up ml as the first instance hit.

Ofc if we’re changing that now, then I think that’s awesome.