Idk why, but it seems odd to me to take a pic of someone's bike without permission...
You ever go to a bike rally, 10,000 bikes parked on Main Street....you see a bike and get
some ideas that you like for your bike...and try to ask someone for permission to take a picture?
I don't see what the big deal is.
Not like someone trying to take a 'rubbing' of your VIN plate.