Wasn't that person trans too though? I'm working on my extensive review of "The Pervert", and while going for a background check on Will Toledo (the person that wrote the preface) I found this reddit post deadnaming Remy as Jeremy from Will Toledo on his own AMA reddit post:
Jeremy was still a guy at that time. I don't think that working on the book is what broke it or much related to Perez. I just think that it's related to Jeremy/Remy transitioning and changing their identity. I saved the post to indicate that the project was in the works for an entire year before being published as an entire comic book, but I guess it will come relevant now.