How often are you offline like that but on a network you can trust isn’t malicious? If I’m at home, my printer is more protected from eavesdropping by the WiFi

How often are you offline like that but on a network you can trust isn’t malicious? If I’m at home, my printer is more protected from eavesdropping by the WiFi password than a self-signed certificate. If I’m at the coffee shop, it’s insecure because I can’t trust the dozens of other people not to be malicious or compromised, and the answer is to clearly tell me that it’s unsafe.