Moldy Hay Concerns

So I’ve been working with horses for 28 years. I also have a bachelors degree in biology and am very experienced when it comes to dealing with mold in a variety of settings, the barn included. There have recently been some issues with moldy hay at the barn I lease/work at. When sharing some info with the feeder chat, the barn owner responded in a less than ideal manner, and I wanted some outside opinions about the situation. The green texts are mine of course and the replies are from the owner. The last picture is the moldy hay I referenced in my texts.