I totally get your point about security updates but maybe, making some generalizations here, it is not a terrible thing that the machine OPs parents use, doesn'

I totally get your point about security updates but maybe, making some generalizations here, it is not a terrible thing that the machine OPs parents use, doesn't get unexpected surprises - no unexpected family tech support calls. Us technology folks love the new and the shiny but predictability is a premium for the older generation (again generalizing - there are seniors who can run hoops around the average developer with their tech skills but thats not the norm).