Why am I not surprised by the response you got?  Like I said so many times, it may take direct escalation to the IRS and state DoR's someday to have Intuit fix things.

Instead of wasting more of your time, at least for the time being, you may like to prepare your own client letter (which is not) and pull the MI-8453 or just have your clients sign the form at the same time they do the F.8879.

@IntuitAustin @IntuitBettyJo  I just checked and the MI filing instructions are incorrect as the OP observed.  It is unreasonable that users should have to incur time and costs fixing these instructions that are clearly incorrect.  Could you please help escalate and give us an update?  Thanks!