Google shows netnut.com[1] being the same thing, so not sure it's the wrong domain. Maybe not the main one. Brian Krebs' comment on this[2]:
> Pretty sure they're working on getting that domain too, but it's taking longer for some reason. Either way, they have dismantled the botnet's back end infrastructure, so for now it's not doing much.
I don't know about "totally dismantled" but it definitely had some impact.
> As a result of these developments, the Company is currently experiencing disruptions to a portion of its services. If these disruptions continue for an extended period, they are likely to have a material adverse effect on the Company's operations, financial results and its ability to provide certain services to its customers.
I personally have no insight into what they have or haven't dismantled. Just found the article interesting (had never heard of the company). Was responding to the "They seized the wrong domain" claim in the tweet you quoted. I read that and thought they disabled an unrelated domain, which doesn't appear to be the case. As for the main domain, no idea about that. Someone brought that up to the author of the piece, and the bit I quoted was his response. I have no more info beyond that.
> Pretty sure they're working on getting that domain too, but it's taking longer for some reason. Either way, they have dismantled the botnet's back end infrastructure, so for now it's not doing much.
[1] https://www.google.com/search?q=site%3Anetnut.com
[2] https://www.linkedin.com/posts/bkrebs_new-breaking-fbi-seize...