The simple answer is yes. Most farmers are as easily misled by advertising as most of us. MOST are making bad choices. In fact most of the Ag extensions in the land grant university system (U of MN, MI, etc) all have freely available hybrids that are selected for the areas growing conditions.
Some farmers are smart and successfully take advantage of the land grant schools. Most do not, and most farmers have failed or are underwater financially specifically because the only buy pioneer/du pont/etc.
The more you know