"Most people want a phone that works out of the box and continues to work and to be fully updated and secure until they pass it on, 2-3 years later, to a relative who uses it for the next 2-3 years and who also wants it to remain fully updated and secure in that time."
I bet if you asked the first 100 Android phone users you saw in the street 99 wouldn't have a clue about updates or really care. From talking to most customers they actually find phone updates annoying as it 'breaks stuff'. Yes ignorance is a kind of bliss.
My Gf hates the fact her phone comes with Cyanogen on it. "Fucking nerds keep updating it!" She especially loved the last update a few days ago whereby the receive updates over wi-fi OR data had been reset by the last update to pull the 400MB in over her data allowance instead of wi-fi, while sat in the living room.