This is an unfortunate scenario that has probably played out many times. My sense is that certain heavily forged autographs are probably prone to getting the thumbs down if there is the slightest atypical characteristic.
The flip side of this scenario is that if JSA or PSA approves an item that looks the least bit fishy, certain attack sites will plaster it all over the front page and message boards screaming how incompetent they are and urge people to report them to the FBI.
Sometimes it's damned if you do, damned if you don't.
I really do understand how some experienced hobbyists resent third party authenticators and how they seemingly swooped in and became the be all and end all. But I think the anger should really be reserved for the forging scum. They are the ones who created the [perceived] need for third party authenticators.