Looks like Google realized Signals-based thresholding was annoying to everyone:

Google signals will be removed from the reporting identity on February 12, 2024. This change will apply to all of your Google Analytics 4 properties and will only affect reporting features. Google Analytics will still collect Google signals, when enabled, to be used in demographics and interests reporting. Google signals will also still support audience and conversion use cases, like remarketing and conversion optimization in linked Google advertising products.