[DigiDigiorno]

I also haven't heard of it, but I'm curious of the "when acquiring it" part of the quote.

Did the current owner not create the site? Did they acquire an anonymous file sharing site and are now shutting it down for the predictable anonymous file sharing issues?

Perhaps it's an English translation issue or something, but, in common parlance, the word "acquire" means to buy or obtain from elsewhere. (I don't think they are referring to the domain name itself, because that has nothing to do with the complaints listed.)

[Stagnant]

I was confused as well because I remember anonfiles being around at least a decade, which seems to be the case (first archive.org snapshots are from 2011). I suppose it does mean that the current owner bought it but it doesn't seem like they made any major changes. The layout and functionality of the site stayed pretty much the same for the entirety of its existence.