I disagree, flick stick gyro has the potential to displace mouse as the best input method. Mouse has the same limitations as controller to a much lesser degree, there's a trade off between being able to turn around quickly and make small precise movements, but flick stick gyro gives you both simultaneously.
The video illustrates it nicely IMO. If you see an "I'm getting shot at" marker to your right just tilt your stick in that exact direction and you're instantly facing your target.
Im curious if i oversee anything here, hence i will share my opinion in a bit more detail now.
A flick stick is a nice utility feature, but nothing you would want to use in a competitive environment.
Im not saying its a bad feature, it certainly has its advantages. But its by all means no feature you would want to use in a competitive environment. For that its too inaccurate, unpredictable and gimmicky.
In 9 out of 10 cases a flick will always result in an under- or overshoot, at best you will directly be on target in 1 out of 10 flicks. And that is a very generous assumption. So in 90% of the cases you must readjust your crosshair via motion, which costs time. And depending on how instantaneous the flick is, or how much distance it covered, you must re-evaluate your surrounding with your eyes again. Doing several flicks in a row will also results in screen stutter, especially when doing several shorter flicks in quick succession.
The only advantage a flick stick has over turning with sticks is its speed. You can instantly turn. But this only applies to PC, and only when translating gyro to mouse movments. Which already comes at the cost of aim assist. On consoles however the maximum turnspeed cap will not allow a flick stick to work well.
In contrary a stick offers much more turning precision. You have full control over the exact end point at which you want to stop the turn, you can select the speed, and also the angle. All of this is not possible with a flick stick. You trade in way too many competitive precision aspects in order to use a flick stick.
As an example.
Crosshair placement is one of the most important things when talking about competitive shooters. You already want to aim into the common camping spot before turning around the corner, so that in the most optimal event you must only shoot. Every top 1% ranked player has great crosshair placement. With a flick stick this is basically impossible to have.
Or look at this video from a gyo community member. This looks anything else than competitive. I would even rate it as unpleasant to watch, not because of the displayed skill but due to the permanent flicking.
A flick stick is something i could see myself playing around with in single player games, but when using in multiplayer games i would intentionally limit my reachable skill ceiling by quite a bit. Its like running a marathon with a loaded backpack. You dont mind the backpack on a casual hiking trip, but when you want to achieve your best you certainly dont want to limit your own potential.