Alexa’s best potential use (imho) is for elder-care.
Every morning she can remind the dementia-addled person who they are, where they live, what they said they were going to do today, etc.
Also, she can play their favorite music, even if they forgot what it was! ;-)
P.S. If our overlords decide it is time for the old person to die, Alexa will get that done as well.
“What is your preference, electrocution or lethal injection?” :-(