Tesla very clearly states:
"Smart Summon is a BETA feature. You must continually monitor the vehicle and its surroundings and stay prepared to take immediate action at any time. It is the driver's responsibility to use Smart Summon safely, responsibly, and as intended."
"When using Smart Summon, you must maintain a clear line of sight between you and Model Y and stay prepared to stop the vehicle at any time by releasing the button on the mobile app."
"When using Smart Summon, you must maintain a clear line of sight between you and Model Y and stay prepared to stop the vehicle at any time by releasing the button on the mobile app."
https://www.tesla.com/ownersmanual/modely/is_is/GUID-6B9A1AE...