I'm the one behind 12+ years of writing a weekly letter to my kids (plus other recipients). I'm a writer by trade and this is just accepted practice for me. Ellen and Reid may have seen letters as corny at one point, but it's accepted practice for them, too, to find something in their mailbox other than bills and junk mail.
Email and texting don't do a lot for me for a lot of different reasons. Snail mail has its place in the communicative world so as long as they keep selling stamps, I'm buying.