Landauer's principle debunked?! "Information entropy and thermal entropy: apples and oranges"

Question

I was asking a question about sustainability of reversible computers against entropy. I referenced Landauer's principle to frame my question and someone told me in the comments that Landauer's principle is generally false. So I went digging on the web and eventually found a paper titled Information entropy and thermal entropy: apples and oranges which claims this. I just want to verify the validity of these claims. Are they true? Is the Landauer's principle based on a misunderstanding of nature?

Answer 1

Information ("Shannon") entropy and thermodynamic entropy are formulated differently but related in the sense that thermodynamic entropy can be thought of as the amount of detailed information about a thermodynamic state which is discarded when you go from a microdescription (all the individual positions and velocities of all the gas molecules in the ensemble at every instant) to the macrodescription of the same ensemble (temperature, pressure, density).