I think the answer is - because they’re lazy and want you to do their dirty work for them. I quite frankly, am not going to call the police over noise complaints because I think management should do something about that. Police should only be called when violence or tenants who get aggressive.
Not because of noise, I just think it’s management dumping responsibility onto you when they’re the ones with the power to evict people.
Neat, our tenancy laws pretty much borrow that word for word!
In this case, loud neighbouts, failure to act would mean not calling law enforcement.
Or letting the place deteriorate would generally count. But, most buildings are up to code etc and the landlord isn’t expected to install extra sound proofing above and beyond code.