Not really. 1 occasional frame drop in heavy scenes isn't what I would call "having frame drop issues"
The framerate never gets aggravating on the Switch, but it does drop a lot more than that. It definitely does have asset streaming issues though, the game often freezes when you're moving between areas because it can't load them in time, sometimes the camera will just stop moving and you have to wait it out because if you don't, you'll get soft locked for going into a place that hadn't loaded yet. There's lots of little glitches like that, and regular crashes, too. It's far from a bad experience, and apparently it is better than Xbox One at launch, but you really are missing a lot of perspective here when it comes to the Switch port.
I'm pretty sure while you thought they were saying "welp, that's the best we can do", they were hard at work on optimizing the game for the Xbox One while also trying hard to make a Switch port run well. Back when they said it would be extremely difficult to make it run at 60fps on the Switch, well, it clearly was, because it was running at 20fps, but extremely difficult doesn't mean they'd given up so they kept working at it until it worked. Again, the Xbox One version has seen patches and fixes and has been running well since long before the Switch release.