Yep, the other workaround that's elsewhere in this thread is to set up an entry with a different authoritative DNS in the hosts file, allowing a single machine to resolve the old domain manually.
This could be part of a greater effort, basically asking other instances to help the users evacuate the instance and transfer their accounts, before running tootctl self-destruct
Scrolled through the thread long enough and I still only see people blaming stigma and capitalism but... Those are just the end effects.
It's plain toxic masculinity: