Probably wise, I used to listen to podcasts and things like that all the time. I've completely kicked the habit now thanks to all this.
I think you can get his book "Understanding Media: The Extensions of Man" for free online, and there have been a few articles written too. He has many, many more thoughts about this topic. But when you start to realise this, you begin to see these cycles cropping up in the most suspicious places. The early Greek Myths are full of cyclical punishments (Ixion, Sisphyus), and sometime after Fredrich Neiszche decides to attack the concept of reading, he comes up with his "eternal recurrance" concept.
I suspect Tolkien was at least partially aware of this considering his poem "Mythopoeia" states: "I will not walk with your progressive apes,
erect and sapient. Before them gapes
the dark abyss to which their progress tends
if by God's mercy progress ever ends,
and does not ceaselessly revolve the same
unfruitful course with changing of a name."
Frodo and Sam's thoughts: https://m.youtube.com/watch?v=zxMvva0ZSyA