Ugh. It must have sounded like a great idea for a book, and who can blame his publishing company for agreeing to it? But I bet he was twitching within twenty minutes of starting to write it.
Yes, there are any number of times when you realise you're out of touch with younger people, and yes, looking bad, your dad was probably out of touch in lots of similar ways, but this stuff only works as part of a wider story - a poignant or funny observation for a character who's got a bit more about him than saying 'and I'll tell you what else is funny'. This felt like I had a drunken wag sitting next to me in the pub who just wouldn't shut up or say anything vaguely intelligent or insightful.