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.
Your landlord has the responsibility to ensure you get quiet enjoyment of the home you live it (by hiring building management they’re delegating that responsible), it’s up to them to sort out noise issues, it’s on the landlord to sort by:
Ultimately OPs problem isn’t other tenants, it’s the noise.
Defaulting to involving cops, waste police time and endangers everyone involved.
In what part of the world? OP doesn’t say where they are from but it would be unreasonable for a landlord to provide that as there are too many things outside their control like other noise sources from beyond the building.
Anywhere where housing law is derived from English law, so pretty much anywhere that’s English speaking.
For 1/2 my paycheck, dealing with noise complaints is pretty reasonable.