So, I just got off the phone with IRCC, and they gave me the same sob story about how I'm not the only one who is waiting, IRCC has hired a number of new program officers that are catching up, blah blah blah. When I quizzed him on why there hasn't been any progress on my application since the 7th of Feb (when my eligibility was met), he said it was likely because CBSA had put a temporary halt to IRCC sending them new cases to process before they can work through their existing backlog, which explains why criminality and/or security have not yet started for so many applicants. It seems the new call center approach is to blame CBSA.