Little update on this...
Had the car at the dealer this morning. After they looked at it, they proceeded to tell me that all the fins are like that. The shop guy walked me around to a few vehicles, all were the same. Some rocked or lifted more than others, but none of them were tight to the body. That certainly left me feeling like "um, just because it's like that doesn't mean it's right". I went to work, and there is another Nox in the parking lot, so I went over to it, and lifted the shark fin. Again, same as mine. The ass end of it lifted, while the front was secure.
So it sounds like it should be that way. I only see the potential issue for water to seep in and in to the headliner. But what do I know
2019 Chevy Equinox LT, 2.0 Turbo, FWD
Mosaic Black Metallic, w/ convenience package
1963 VW Beetle