Most probably write down what they're going to say in a script, but then they've already written it down and can be done by copy-pasting that text into a blog..

Most probably write down what they're going to say in a script, but then they've already written it down and can be done by copy-pasting that text into a blog.. Seems to me like audio content is added work that doesn't provide many benefits, at least for this sort of prepared content. Audio is more useful when recording spontaneous conversations.