Some individuals advocating for the petition (for QABA credentials specifically, in most cases), have been calling into question the honesty of other commenters who have pointed out the autism-focus of their credentials. I'm not sure what the confusion is about, but the autism-focus is written front-and-center on QABA's website (https://qababoard.com/). In its own Mission Statement, which reads: 

"The Qualified Applied Behavior Analysis Credentialing Board (QABA®) is an internationally-accredited credentialing agency dedicated to ensuring the highest standard of care among professionals providing applied behavioral analysis (ABA) services for individuals with autism spectrum disorders and related disabilities."

Even QABA's middle tier/bachelor's level credential has autism in its very name, the Qualified Autism Service Practitioner-Supervisor (QASP-S)?

I hope this helps clear up any lingering confusion.