Safety is definitely an area that can't be taken for granted in any industry, including the agricultural industry. Simple improvements can make a huge difference. While unannounced inspections are probably not always convenient, they do help one to focus on improvements.
That recommendation from the inspector, for gates with vertical bars is interesting. While his logic for preventing children from accessing areas they should not be in, makes sense, would it prevent someone from escaping a potential incident in an emergency situation? For example if one was in a pen with livestock for whatever reason, and needed to escape the pen, if an animal became aggressive, a gate with horizontal bars, rather than vertical bars would be easier and quicker to climb over, should one need to get out, assuming one doesn't have the luxury of enough time to open said gate.