I went back and read your first post. Seems like you had an unresolved difference with the installer before you had the work done. I would have been sure I would get a zero taper tip. You say he told you he was going to put "a little bit of taper" on the tip. Without going to my machinist's handbook I suspect there is no definition of "a little bit of taper" so you and the installer weren't on the same page before the install. I suspect he was being very sure he didn't get the slightest mark on that carbon fiber perhaps leading to a tiny taper too.
There are a couple more things to consider. When burnishing a tip the bottom is supported by the ferrule, the top has no support. This can lead to a slight taper. With somebody that is heavy handed it can lead to a noticeable taper.
The final possible issue causing confusion is that we are looking at a macro image of something small. I am looking at an image of the tip three inches or so across. Looking closely, I see the right side of the tip is straighter than the left and the crown of the tip is more gradual on the right than the left. These things and a little background in photography tell me that the camera and tip were not perfectly positioned. A several hundred dollar fixture is sold for those that need things positioned perfectly so this isn't a knock or a claim your image is intentionally misleading, just pointing out that you probably either had the camera slightly tilted, the shaft not in the exact center of the image, or both.
Ultimately, I think you got what you paid for according to your first post, the installer said he was going to put a slight taper on the tip and did. Add a tiny movement burnishing the tip and a bit of camera error and you can easily have what we are looking at.
I think the install is fine and you will be well satisfied playing with the tip. If you aren't, I would use an installer that agrees to a straight tip install next time. I would also specify it be very lightly burnished or not burnished at all. A light burnish is almost purely cosmetic, a heavier burnish helps prevent mushrooming but as mentioned earlier may add some taper to the tip itself.
I don't think you have any recourse with the installer if as the first post indicates, the final word was you would get a little bit of a taper on the tip. However, if you are going to be super anal about the tip, you and the installer both need to be on exactly the same page to begin with. Benchrest gunsmiths live in a world of micro precision seldom encountered. I sent one three barrels to chamber and crown. I told him up front that I wasn't picky, I would settle for perfect. He left some swirl marks in a chamber that took about ten seconds to buff out. I told him I didn't expect to see such work again!
Hu