Customizable mouse acceleration curves allow for the advantages of accel without the disadvantages of traditional “desktop use” variants.
RawAccel (Windows) & YeetMouse (Linux) accel is based on Quake Live’s accel, which allows for precise tracking movement while still being able to quickly turn 180°.
There’s some really bad mouse accelerations built into desktop OS. For example Windows’ mouse accel curve is an abomination and I really don’t know how they came up with it. Maybe they threw a dice. [1] Comparatively a curve like [2] is much more suitable for gaming, as it essentially allows for precise tracking, small flicks with constant sensitivity, while still allowing for rapid 180 degree turns. Especially quake-like arena shooter benefit from this as you can play long range and close range with the same settings (Quake is where this kind of mouse accel was first implemented).
[1]
[2]