Their reply came today:
We truly appreciate the time you have taken to reach out to us and bringing this error to our attention. While I will not be able to provide any updates, I want to assure you that I have forwarded your email and included image to the appropriate Leadership teams at Epcot so that they can review and taken the necessary action.
About what I was expecting.
If I played any role at all in getting the error corrected, I suspect it was by contacting Zach on Instagram or perhaps by posting here (assuming anyone from Disney actually reads these threads). It’s also not unlikely that multiple other people, including some who work for Disney, spotted and reported the issue around the same time I did.
I’m still going to chase them up on the new issues I noted, but I suspect those will be allowed to remain.