The reddit post from the grandchild says "autopilot", which is really just lane keeping and adaptive cruise control.
I believe autopilot would totally run into a house. It doesn't respect stop signs or red lights. If the house is at a T intersection the autopilot might try to drive right through it. I agree about FSD though
Adaptive cruise control certainly shouldn't run into a house, for the same reason it should detect a stationary (or slow) object in front of you and gradually slow to a stop before it.