"Autoland" in an airliner is nothing like this. It performs the actual landing (and in some cases part of roll out) only. The airliner's designers assume that since their planes are designed to be used only with at least two fully trained pilots there is no reason to worry about scenarios in which a non-pilot is now in charge. Those simply don't happen.

Is it possible that they could talk a civilian down in an otherwise perfectly functional jet airliner given the pilots both are totally unavailable? Yes, but it'd be really hard and I would not give them great odds for it working.

Plenty of random non-pilots won't even successfully work an airliner's radio, if you end up talking to yourself, or the passenger cabin, that doesn't help you.

In contrast what Safe Return Emergency does is really one button "Oops, the pilot is unconscious/ dead, fix it". It has the same reassuring "Don't touch the controls" you get from Waymo cars. The SRE system is flying the plane, you can best help by staying calm and maybe trying to fix the pilot if that possible. It will figure out where there's a viable landing strip it can reach, broadcast its intentions to nearby humans, fly to its chosen strip, set up, perform the landing, roll out, stop and shut down the plane.