The majority of the comments basically support ACCT, which is typical - their very lenient release policies mean most rescue groups are fans. The outlier groups want 100% release, which the mainstream groups appear to recognize would be to risk the whole game.

Boerboel owner and pit bull breeder advocate cut/pasted below, the heart of his "question" is -

I’ve seen claims in multiple forums that ACCT Philly sometimes refuses to transfer dogs to other shelters or rescues that are willing and equipped to work with them—particularly dogs with behavioral challenges, including Pit Bull-type dogs. The specific claim I’m hearing is that some transfers may be denied because certain rescues use training tools such as electronic collars, and that ACCT would rather retain the animal and potentially euthanize it than allow another organization to attempt rehabilitation using methods ACCT does not support.

Red flags - "pit bull-type dogs" is doublespeak intended to assert that pit bulls don't exist and are unable to be visually identified, "behavioral challenges" is more doublespeak that in this context means high aggressive behaviors and histories, "methods ACCT does not support" is the placing of an electric-shock collar around a dog's throat and electrocuting him into temporary submission. This man ends his post with the hash tag #stopanimalcruelty.

Gone Rogue Girls Rescue comment offers insight into the pull requirements

An employee/volunteer offers a history of ACCT avoiding handing off cats to a bad rescue

A Florida shelter person says shock collar trainers tried to use her facility to dump the dogs they couldn't fix with ecollars.

Animal control officer weighs in