Okay, so I opened another previous save file (this is the one I use to do a 50/50, so only mods used are those for the creation of the sims themselves, so the lot itself does not have any mods or cc. I do not have my mods in the game for this test. I got the LE on my first entrance into the save. I hit save and exited. I attached the LE to this message. When I loaded into the game again (after clearing the cache files and moving out the LE), there was no LE generated, but my sims both had two birthdays in a row and death appeared, so apparently it sent them to their deaths.
Not sure if this LE will be helpful, but at least you can see another one that my game generates with no mods on a different save from the one I sent you earlier.
I admit with the rapid aging thing, I am nervous about trying this with my other saves. Thankfully, I have the originals all backed up so I can try it, but I would prefer not having to go back to game repair with the save files in the folder again if at all possible.