So what happens when your caliper has rusty hardware and a bolt snaps off? Tires? Easy. Oh wait, your wheel bearings are garbage and you don't want to buy new ones because "they never did that before". The banjo fitting hasn't been touched in years and now won't seal again and it's a weird angle because the previous owner installed some bars from a Dyna? When the clutch cable refuses to move again once it's been pulled from its current alignment and there isn't one available except on eBay and it's four days out and you still want H-D warranty because "it wasn't like that before". Oh and the easy pull has a different size barrel at the ends and now there's play in the lever. But online it said it was for this bike! Look at my phone, it says so right there!
But... but.. no. My bike doesn't have any of those problems. It would be easy. I know for certain!
Sure you do.
Maybe worth the headache for some, definitely not for others. Sounds like they were right to turn you away. You refuse to try to see the other side of the story and would end up being a multiple time comeback for some pile of a sporty that they didn't want to touch in the first place.