Most of the code the reviewer mentions is related to the optional use of graphics. If the graphics are switched off the extra code does not get rendered. There are very few if any other modules in this section which offer optional graphics so I feel this point is unfair.
Also I would ask the reviewer to bear in mind that modern internet speeds are much higher than they were just a few years ago and that additional lines of code have no real effect on loading times of a page.
I did some tests the home page of Joolma.org, this had a total load in excess of 500k and a clean install Joomla with the default scripts installed had a total load of in excess of 250k. The code which the reviewer mentions adds approx 2k per page per module. In short it is negligible. You can check this out at test sites such as pingdom.com
In addition I would point out that when I write code I do try to make it readable. It would be very easy to write code with very short single letter id and class names.
I like to think that I write code that is well presented in the true spirit of open source, meaning that the code is readable not just available.