The two comics were linked pretty definitively, not just obviously by the similar drawing style but some other circumstantial stuff. The identity of the individual behind either one was previously unknown publicly.
tl;dr "Red Panels" had an account on Gab, from which a lot of data got big time leaked in early 2021, and it was registered to an email from which everything else comes together. So this was waiting to be revealed for a long time now.