A vacancy has been opened up. That will trigger numerous consequences across the system. Yes, every time you observe such consequences, you will be reminded of its cause -- the roommate's death. But it's unrealistic to expect every other subsystem not to do anything that reminds you of that death, which, as far as I can tell, is the extent of this email's "wrongdoing".
"Woe is me, how dare you, the housing system, refer to my roommate's death as just another vacancy." Come on, now.