Doesn't strike me as strange.
A riding mower and a motorbike are two things that one customer might want. The guys buying Africa Twins definitely have yards.
As for the sales staff, that certainly doesn't describe this dealership or the one I bought my bike from. To be fair, the guy I bought from in Hamilton was definitely portly and middle aged - but he's been riding since I was about 6 years old and definitely has a clue about motorbikes. The guy we bought my wife's Monkey from is probably half our age, and rides a CBR650R and a Grom.
Generally, I have found motorcycle stores have MUCH better informed staff than car stores. YMMV.