So, Richard Donald Lorne Burdett used the usernames fstopvox and F_Stop_Fitzgerald on Reddit, Twitter and Snapchat. His subreddit repository for his scripted erotic audio recordings was taken down after he was charged with child luring, making child pornography, possessing child pornography, accessing child pornography and making available child pornography as a result of a search warrant dated April 20, 2022.

It looks to me like he "lured" an informant, so he got served a search warrant in which making child porn was discovered. He deserves his day in court, so these are still allegations. I am guessing they are going to make the case that he a) took some pictures/video of b) someone who was under 18 at the time. The accessing and making available charges could be from his computer/IP address on some messed up website.

According to The Toronto Star:

Richard Donald Lorne Burdett — Burdett taught at a Toronto arts school. Following a parent complaint it was discovered that he “spooned” with female students on international trips and sent 1,300 sexually charged texts to one female student, including one text where he said he had a dream of performing oral sex on her. He received a one-year suspension from teaching in 2011, for allegations that surfaced in the 2006-07 school year.

Here's the 2011 document ("mighty interesting"): https://www.oct.ca/ShowDocument.pdf?documentType=Decision&id=83&lang=E

I don't see a connection between any of that and the fictional audio in his subreddit. I haven't seen anything about the ages of the art students in question.