Interesting ... another time holography in the context of physics has come up. Youtube recommended the Wired series where some expert explains some concept at different levels and one recent one was on Gravity [1]. In the expert section they talk briefly about holography and how a two dimensional surface seems to be able to encode all of the information of a three dimensional volume. They go on to speculate how this might relate to the event horizon of black holes. I get a bit lost since it is heavily edited and they are clearly talking about things beyond my ken. My takeaway was that there is a possibility the information we thought was getting lost within blackholes is actually still present within the surface of the event horizon.

There was also a brief mention of holography in this interview with String Theorist Jim Gates on Lex Fridman's Youtube channel [2]. I can't remember the exact context of how holography is related to strings but I believe he was talking about how it could impact some of the maths behind the multiple dimensions some string theories required.

[1] https://www.youtube.com/watch?v=QcUey-DVYjk

[2] https://www.youtube.com/watch?v=vGQ3q4dO_9s