Not at all. That a distant observer could infer this of Earth from a distance was proposed 50 years ago. The BIG "tell" about Earth is television and radar emissions.
I agree with Stephan Hawking that our signals (especially SETI) may be foolhardy messages to superior civilizations of hostile nature to come stomp us.
Just as mankind is presumptive to believe it's actions are permanently damaging Earth's atmosphere it presumes the concept of life solely belongs to carbon life forms. Too bad exploration has been curtailed and entrenched bureaucrats protect their fiefdoms declaring areas of science are "settled".