This is similar to the response many people got last time. Eventually, a US petitioner was able to speak directly with a congress member, which quickly turned into something resembling an admission of department delinquency and, even better, actual ACTION.
All this to say, I think you're on the right track. Try not to let soft, ineffectual communique like this discourage you.
If 4-month or 6-month batches is what they're doing now, then fine, whatever, they should put out a bulletin saying that, so petitioners and beneficiaries can make reasonable arrangements.
Just my 🪙🪙.