Sims 2 and corruption get overexaggerated many times due to all the times players spent arguing with Simmers on the official forums that would claim that it's not possible to corrupt the game. And it's one of those things that if you get caught unaware and you get unlucky with how quickly the corruption spreads you can learn the hard way about corruption. You tend to be passionate about things that burned you in the past.
Sims 2 is one of those games where while it is easy to corrupt your game, once you know what not to do, it's hard to corrupt your game.
Here's a page that goes over corruption and the various myths, also has a list of various mods and utilities that can help prevent, diagnose, or fix corruption:
https://sims.fandom.com/wiki/Game_guide:Avoiding_corruption
It looks like deleting Sims in game and disappearing gravestones are one of those things that got roped into causes of corruption, but actually aren't. At least through the SimBin. The deleteallcharacters cheat is still considered unsafe.
