Would you be willing to install "a free private messaging app", Facebook Messenger, in order to "maintain a social or personal connection" to a person in your family?
Given your refusal, would you think that, for that person in your family, you would fit the description of "someone who can't spend 2 minutes to install a free [..] messaging app to maintain a social or personal connection"?
Would you think that that person in your family would be presumably better off without you?