I actually forgot I probably have Smart Summon. That's how much it's mattered to me. Regular Summon would actually be more useful to me, but I haven't used that either beyond the first week where I showed it to coworkers.
For very good reason (parking lots are treated as public roads here), use of Smart Summon has been disallowed where I live. All it took was one video of a Model 3 doing the common thing of driving on the wrong side of the road (in parking lot) during a Smart Summon session, and the provincial insurer stepped in to remind us that driverless cars are not yet legal and this is a perfect example of why they're not allowing it. Completely fair, completely justified.
The fan reaction is "but you have to let it mess up to get better, just like a new driver!", but I'm pretty sure I (or anyone else) never drove so inconsiderately in a parking lot at any time during my learner's permit. But over 2 months later, to this day, I'm sure Smart Summon is more or less the same and hasn't "learned" anything despite being able to "learn" from tens of thousands of cars, whereas each new driver more or less needs to be told just once to drive on the correct side of the road.
We're a long way away.