A recent paper suggests that Earth may not be interesting enough for intelligent extraterrestrial life, as they might be more focused on planets with signs of advanced technology rather than just the presence of life. Astrophysicist Amri Wandel explores the Fermi paradox and offers a possible explanation: life is common in the Milky Way, making Earth less appealing to advanced civilizations that would prefer to communicate with technologically developed planets...
Maybe aliens haven't contacted Earth because they think we’re stupid | Live Science
https://www.livescience.com/aliens-technological-signals