I'd agree a lot of my liking of it is baised inheritly, but even with the problems with the dual screens and controls, I wasn't bothered by it. But if someone said it was due to my own bias, you might not be wrong there but the controls didn't bother me with this game at all outside of the first 30 minutes.
While I liked the game, it would have done better if the gimmick wasn't shoved onto people and they had more options to change the controls. I rate games on personal enjoyment even when being critical at points.
I gave it a 9/10, higher maybe than I should have but I really did love this game as a whole. It gave me an experience on something new, the controls if you like them add to the game imo, if you don't then you won't like this game.
Really what I think went wrong with it's appeal as a game is the fact that they were conservative in areas they should have went harder on, story/multi-player, and went too ham on areas like controls where they should have let people stick to something easier for them to get into it.
Making something devisive was not the way to go for a franchise to comeback from a long hiatus, also keep it first party please Nintendo.
Might have also worked on not at the end of the WiiUs lifespan, but again physical sales seemed to be bad, though adjusted down for some reason. It won't be the end of Star Fox but a few things need to change,
1. Fanbase needs to get it's head together on what it wants and not split, half wanted SF64 again while the other half wanted something new. Might be better to try and build a new fanbase honestly.
2. Less gimicks in the wrong areas and more content in the right areas. Multiplayer/online etc need to be a thing, people really badly want this to be a thing.
3. Put it on a different system at the right time, two screens would have worked on a DS screen better than a TV with the gamepad. Also don't release it this late into the game with the WiiU, this would have been way better as an early title than one this late into the game.
The game series needs to find it's place again if they want to use the IP more, this didn't help in the long run but I'm still glad it exists.