I think that websites needs an update, too. It would be a bit more convincing if they didn't try to support IE, and explained why the native methods are better.

I think that websites needs an update, too. It would be a bit more convincing if they didn't try to support IE, and explained why the native methods are better. Starting with the Ajax exmaple isn't the best way to get people on board, either. Until the Fetch API was widely adopted, I also reached for a library if I had more than one very simple API call.