This is a core difference between Signal and eg WhatsApp. The Signal UX clearly shows who’s verified, and the UX clearly earns you when the safety number change

This is a core difference between Signal and eg WhatsApp. The Signal UX clearly shows who’s verified, and the UX clearly earns you when the safety number changes. Additionally, the secondary device model (eg Signal Desktop) goes to great lengths not to break that. With WhatsApp, you’re trusting WhatsApp.