Yes, that ending is reachable. It is tied to the Blank fracture route: choose options that deny, hide, erase, or remove the fracture rather than answering or studying it.
Once you have fully entered that route, the Mind panel should display “Blank” along with an “Absence” value. Keep building Absence, then take the final Blank choice.
The ending also requires low Paranoia, so it may not trigger immediately if your Paranoia is still too high.
If you find any issues please let me know