This is one of the biggest document collections ever released to the public (...or will be when it's finally done) and the redactions were done in a hurry by a government agency with limited resources which would usually be doing more useful things.

So it's likely there simply isn't the time to do extended multi-step redactions.

What's happening is a mix of malicious compliance, incompetence, and time pressure.

It's very on-brand for it to be confused, chaotic, and self-harming.