Children, grandmas and people of every other age cannot set up and maintain a website as you'd most certainly agree, and as a nephew or any other relative I would at this point refuse to help because of the maintenance part which they cannot do and which will never end.
People will use things which most of the time do not punish mistakes too harshly and don't present problems requiring actual thinking to solve. I think people are right in refusing to use the other kind of thing because the alternative burns too much of one's time and is too risky. Big web companies manage to build such artifacts over the infrastructure that is the Internet and the WWW; I'm not aware of alternatives.