You have too much faith. Do you really think they verified every car park in every country where enhanced summon is available? Does that sound like the kind of quality assurance Tesla does for it's autonomy features, e.g. verifying that the car doesn't drive into barriers at 80 MPH? Come on, that's what the "beta" tag is for.
I'm actually pretty happy with my low expectations of smart summon so far. I have been using it at work mainly just to let it stretch its legs, and it works good, although I don't use with traffic. If only NoA wasn't horrible since a couple updates ago (mainly related to ramps and interchanges).
"A vehicle being driven autonomously in a shopping mall parking lot, for example, is not allowed." I don't know anything about Canadian law, but if it's similar to the US, surely the owner of the shopping mall is the only authority allowed to decide whether it's allowed. Does the transit agency really have authority over private lots?