determine-reboot-cause and process-reboot-cause set their minimum log priority to sonic_logger.DEFAULT_LOG_LEVEL.
sonic_logger.DEFAULT_LOG_LEVEL is level 21 which will cause INFO logs (20) to be excluded. This seems unintentional based on the comment # Configure logger to log all messages INFO level and higher".
set_min_log_priority should be called with level 20 to log INFO messages and higher.