A licensed architect or SMEP can supervise unlicensed people, and yes they take the liability. That junior person, if they're put in a position to do any damage generally has a professional or pre-professional degree in the field. They have been taught the necessity of the standard of care. They can suffer consequences - if something goes wrong it can be blamed on them. (even if as unlicensed staff they can't really take legal liability.)

What they are not is a probabilistic model that cannot be held accountable for errors. I mean, unless the developers of automep.app want to take legal liability for the performance of their model.

Right, but there is still liability, right? And liability still resides in the licensed professional. It doesn't go straight from the model to the customer.

It's pretty common for CAD software (and other software in general) to have an AS/IS license. It's up to the user to detect it and correct any bugs the software may have had.