“ No provision of these rules prevents the use by an amateur station of any means of radiocommunication at its disposal to provide essential communication needs

“ No provision of these rules prevents the use by an amateur station of any means of radiocommunication at its disposal to provide essential communication needs in connection with the immediate safety of human life and immediate protection of property when normal communication systems are not available.” You’re overthinking this. It says nothing about method. If a station is available to you, normal communication systems are not available, and there is an immediate threat to life or property, then use the station. Simple as that. This is a clarifying rule and it’s important to look at the intent, which effectively boils down to “if it’s truly an emergency, rules can be ignored”, even if it’s structured semantically in a way that the definitions do not necessarily agree.