You want Lacerte to reprogram the software based on a third party having an informal discussion with the IRS?

There is no indication that the IRS has reprogrammed their computers.  Assuming that is the case, the IRS e-file system would not be able to accommodate such as a thing even if Lacerte did reprogram things, and the data-entry clerks at the IRS who enter paper-filed returns would have nowhere to enter it.  As such, the taxpayer would receive an automated computer notice about the penalty.