The feathers are shaped in a particular way naturally. When you bend them the other way, it is wrong. period. Yes they may work, but it is wrong. The shop guy didn't know what he was doing plus gave you poor service, period.
When you take your car to get fixed and they fix it "kinda" but not right, and then they say " but for a "casual driver" like you it won't matter much, do you accept that?
I agree with rraming. You were insulted, and sold a bill of goods that you just didn't need. On top of that, they screwed up your arrow shafts.
Chuck