This vid starts a little slow and gets a little slower as it progresses but I watch this stuff hoping to land on the correct side of the title -> "Audiophiles and Audiofools"

The presenter provides down to earth explanations of the complex paradigms that define 'Hi Res' audio. He also explains how these paradigms work together to exceed the capacity of the human ear. IE: Sample rates; Bit depths; Lossless CODECs; Lossy CODECs are all defined in simple terms and related to the human aural capacity.

https://www.youtube.com/watch?v=IiZqYnd5g8M

I agree if a lossless FLAC CODEC is used to create a FLAC file from a CD that was mastered with the standard Phillips CD format and you're not planning on remastering the FLAC file then it seems reasonable to say that paying more for a 24 bit FLAC over a 16 bit FLAC is a waste money and storage space.

However the presenter barely touches on PCM but he does not address SACD, DSD and the latest DSD DAC offerings at all.

if everything that can be heard by the human ear is included in the standard Phillips CD format and we use a DAC that accurately decompress's the FLAC without alteration how do SACD, DSD and the latest DSD DAC's add to human listening experience?