I'd say he is not completely right, yet. Many of my students type up their thesis on their phone (totally crazy to me, but I'm 'old'), and only switch to a lapt

I'd say he is not completely right, yet. Many of my students type up their thesis on their phone (totally crazy to me, but I'm 'old'), and only switch to a laptop to get it into shape/format to turn it in. Give it some time and maybe a household will only have 1 laptop for all inhabitants.