GIven what I know of the timeline of the attacks so far, this seems legit. It also is consistent with the overall tone and content of the post they've made earlier.

I am still disappointed about their response, especially this part:

Embrace, extend, and extinguish (EEE) - We don’t think they can. If anyone can explain how they technically would, please let us know. Even if Meta forks Lemmy and gets rid of the original software, Lemmy will survive.

That seems like a wilful attempt at not addressing this issue. They just don't think it will happen, no justification, and then throwing the burden of providing justification to the other side. It also sidesteps the glaring issue that EEE is not something that is solely technical (standards, etc.). For example what is going to stop Meta from just forcing their way into changing the standards to their own will, justified that they have the biggest share of the Fediverse by number of users?

Besides, no amount of "you don't understand xyz" ever would allay people's fears. People, rightly, are fearful of Facebook, aka Meta. What's their answer to that fear? Telling that people have nothing to fear about? How about telling people why it is nothing to be fearful of?