If they aren't to be taken as gospel, they shouldn't be on the label.
You are perfectly within your rights to let CGC know your opinion on the matter. I am only saying what is, not what should be or could be.
That's a bad comparison. CGC is a GRADING company, not a NOTATION company. You are not paying them for the label notes. You are paying them for the grade. Why are you not paying them for the label notes? Because, as I said, the label notes are subject to change, for no other reason than the market evolving. When CGC first opened, did anyone care that Hulk #271 was RR's first appearance? No. Did anyone mind, then, that the notation wasn't on the label? No. You pay CGC for the grade, not the notes.
Well, first, the grade ISN'T guaranteed, and never has been. The only guarantee that CGC has is that the item is that the comic book is authentic, that it has been examined by two "comics professionals" (whatever that means), and that the holder will be defect free for five years. That's it. In fact, in the guarantee, it is specifically stated that the grade IS NOT guaranteed.
Second...why not have something which is up to interpretation? The grade itself is up to interpretation!
Of course it does. CGC is under zero obligation to make sure a service which is not paid for is correct. Again...you're not paying for the notes.
This necessarily assumes that CGC doesn't give a hoot, and just puts whatever they want on the label. That is NOT the case. Go back to the Hulk #271 example. In 2002, 2005, 2007, 2009...nobody cared that it was the "first comic book appearance of Rocket Raccoon." So, that absence from the notes meant nothing to anyone. So, now that the market DOES care, did CGC "get it wrong" all those years, by not including it? Were they not being "diligent"?
No! Of course not. Again...inaccurate information is not the same thing as incomplete information. One is absolute...the other depends entirely on market whim.
Sure, and feel free to volunteer your services to CGC to notate all the comic book notes that the market will consider important in the future, but does not consider important now.
Because, I've got the first appearance of Slaughterman that needs notation!