"So if the activity is reported on Schedule E does a Form 1099-NEC have to be issued to a self-employed contractor?"

My understanding for backlash that resulted in that repeal has to do with Ownership. You stated Landlord. Is it self-managed?

If you own and manage your own propert(ies), you would not 1099-NEC the landscaper. If you are managing someone else's property, you are supposed to 1099-NEC those service providers.