I think you may have misinterpreted a critical part of the sentence:

'do not allow the FEELING of "I learned something today" to substitute for Actually Doing Things.'

Insight porn, so to speak, is that way because it makes you feel good, like you can Actually Do Things and like you have the tools to now Actually Do Things. But if you don't get up and Actually Do Things, you have only learned how to feel like you can Actually Do Things, which isn't nearly as useful as it sounds.