Excellent and very accurate quote. It is also in Swords Around A Throne (and I also have Boulart). What is important is to do the follow up on what Napoleon did to remedy the situation. That is stated quite succinctly in Swords in the artillery chapter. What Napoleon did to remedy the situation was to establish an efficient army artillery staff that was emplaced as a subordinate section of the army general staff and also assigned artillery generals as corps artillery chiefs as well as an army artillery commander, the only army of the period to do this.
As to anyone being 'deficient' in artillery knowledge on the forum, I would consider everyone 'deficient' in artillery knowledge as all anyone has done with the artillery arms of the different armies is skim the surface, some more or less than others. Further, artillery is the least studied and understood arm of the period, except with the possibility of the engineer arm, and much misinformation has also been passed, especially on the forums. That is why I have assembled an adequate artillery library and look up material before I post it.