What exactly is textural density??

Herb is the best!! Love that guy.

"...never went through what you did..."

A course in German it was not.

"When I use a word," Humpty Dumpty said in rather a scornful tone, "it means just what I choose it to mean —neither more nor less.""The question is," said Alice, "whether you can make words mean so many different things."

- Through the Looking Glass, and What Alice Found There (apologies to Lewis Carroll)

If you are a hi-fi magazine writer, you are largely describing sound.
This is certainly not easy and you need real talent, nay imagination, to invent hundreds of expressions to do that.  Otherwise every month's copy would be much the same.
It appears that the creators of the most flowery, ambiguous and vaccuous expressions are the most successful hi-fi writers.
My advice, Erik: read John Atkinson, not Herb Reichert, as I have done for more than 40 years.

It’s perhaps described as a combination of textural density tone and weight IMHO. A note has a beginning middle and end and it is the ability to fulfill these