Not to argue the overall point (retrying on a tight loop is not a good solution), but many of the models support communication the other way—e.g., remotely starting the car, adjusting the HVAC, etc.

So there is some justification for trying to keep a cell signal established or checking in more frequently than every 15 minutes or so. Someone attempting to remote start their car not having it actually respond for 15 minutes is likely to already be outside trying to leave and pissed off that they’re walking out to a cold car with iced up windows and thinking that the “remote start didn’t work”.