My grandfather only uses Firefox. I installed linux on an old pc with only firefox on it. He is so scared to accidentally download a virus with everything he cl

My grandfather only uses Firefox. I installed linux on an old pc with only firefox on it. He is so scared to accidentally download a virus with everything he clicks. Recently I gave him an ipad, productivity went up x3 and he only uses safari. Tapping is better for him compared to a mouse. It depends on tech literacy.