They are just in their early 60s, and are currently using email, messages, and use the internet to browse facebook, online shopping, etc.
I think the advice on old tech is right and that's their tendency already (all of their passwords currently are in a notebook next to their computer). I'm hoping we can set up some systems as caretakers that will let them personally put down whatever new tech isn't directly helpful/necessary.
They're still fairly independent though and so I think it'll be a gradual reduction. And in the meantime I'm looking at ways to help remotely (setting up shared passwords, bill auto-pay, remote login for their macbook if they need my assistance remotely).