I disabled Apple Push Notification Service but it's still attempting to connect to Apple servers

I disabled the service as per the instructions on this page: https://apple.stackexchange.com/questions/92214/how-to-disable-apple-push-notification-service-apsd-on-os-x-10-8 Yet this service is still running at startup! How do I disable it once and for all? Edit: I'm using Mojave