I would say that his statements are correct. MG is supposedly very common and some experts say 75% of backyard flocks have it. Some folks dispute these claims. I tend to believe that it is very common since it can transmit through the egg in about 10% of the eggs and it can be carried by wild birds just flying through. Hatcheries can be tested for MG and sell MG free birds, but the testing is very expensive and every single bird has to be tested every 3 months. If hatcherys did this the price of their birds would likely be more than folks would be willing to pay. I would also reccomend Denagard to treat your birds. It's supposed to be really effective on MG. I didn't think the price was all that bad considering that for a small flock the bottle would last a good long time. I hope this helps you.