part engineer humor and part an understanding that they were tools with known characteristics...
making them useful as tools. I wouldn't make too much of it, as I expect not much was intended.
Some folks love 'em stock, certain vintages, modified, re-crossover-ed, etc... (I am one). There
are those who do not, including some sound engineers.
Being aware of this, I found the comment somewhat humorous, not malicious.
I do agree with the notion of leaving well enough alone... best one can, but enhanced is unnecessary.
multi-channel mixes with artist involvement I view as a distinct product.
Hope the box set is what you're anticipating!