You start with this, and then go into more examples of "content that was essentially the internet before the internet" like going to 7/11 with friends, reading Nintendo Power, and riding your bike. That sounds a lot more like missing your childhood than any cultural changes, especially when your pre-internet internet includes things like IRC and message boards. It seems like you're just using "internet" as a synonym for "the present".
> All of that greatness is turning to vaporwave nostalgia.
The only criteria for being included in "that greatness" is that you enjoyed it and it's not popular anymore: it isn't turning to nostalgia, it's nostalgia by definition.
Replace Cecil Adams and the Straight Dope with whatever you like, and this is just as fitting of a sappy eulogy.