You don't need to get it. The local dirtbike dealers have no product knowledge either.

I think we're a bit hyper-aware of the shortcomings of auto salespeople on this board and we tend to forget that
most salespeople in
most industries don't really know what they're selling. In my experience, lack of product knowledge by salespeople is almost constant whether I'm buying cars, motorcycles, bicycles, electronics, tools, etc. I haven't bought a house yet, but when I do I'm sure that I'll have to do enough research that I'll probably know more about what makes for a good house than the realtors I'll have to deal with.