Why am I receiving this message from Apple?

Sometimes one does not understand why a post was removed - the Apple employee(s) (host) having made that decision does. The email notification may not be totally explanatory. And, if you will read the ToU, the last sentence explains it well:

Apple Support Communities Use Agreement

And, the hosts are Apple employees; the volunteers/helpers here are not. Apple owns and runs the site, but does not actively respond here except for the "community specialists" which are also Apple employees (they have an Apple logo). We do not run the forums and are not privy as to Apple's policies. Neither do we need to be. We do know (from the ToU) that the forums are to be mostly for technical questions/answers and that we are not allowed to discuss Apple policies.

As a tip: if something was removed, that would be the cue for you not to repeat it as they will most likely remove it again.