I don't think I've every criticized BOB seed from the perspective seed quality. I think that varies from company to company. BOB seed fills specific niche of guys wanting attraction in small where the cost premium, while significant as a percentage, it trivial in dollar terms due to the size of the plot.
There are quite a few BOB companies that have developed or acquired well researched seed varieties, no doubt.
The problem with the "attraction" studies is that everything is relative. What else do deer have available at the specific time? More importantly, what are the other factors. Some guys think if I plant a more attractive crop, deer will come here to eat rather than my neighbors plot. My experience has been that the attraction of the specific crop is probably one of the least important factors in attraction. Probably the most significant is security, how safe deer feel using the plot during shooting hours. The plot location, the surrounding terrain and vegetation play a significant role, but the most significant is hunting pressure.
For managing deer, it is always better to have a mix of seed than a monoculture. It is better for deer and better for the soil. When planting a small plot where seed cost is a minor concern, BOB seed shines. While some BOB seed is better than others. In most cases, it is not practical to buy the individual seed components and mix yourself. Of course there are downslides to BOB seed. First, you need to pay close attention to the seed tag. Keep in mind that SuperMegaBuckFantastic seed mix may contain different seed and proportion from year to year. The other issue is for QDM folks trying to operate on scale. There, seed cost is a much more significant factor. It is generally better to plant more acreage at a lower intensity
BOB seed has its place, but it is hyped way too much across the food plot industry.