I know its enabled by default. This question is mainly for people who prefer to keep it enabled.
When I was playing with chatgpt he told me this:
When you use mouse acceleration, you have to move your mouse more quickly to cover the same distance on the screen. This can put more strain on your tendons and muscles. Additionally, mouse acceleration can make it difficult to develop muscle memory, which can also increase your risk of RSI.
From what is says it can be harmful.
I know chatgpt is sometimes wrong, but found only one source (Dr. Levi Harrison) that agrees and nothing more.
Well ChatGPT is wrong. You'd have to look at a particular acceleration curve to determine whether it can be slower or faster. For example if the curve was x^2 (where x is the raw speed) then it would always be faster with acceleration.
Acceleration is very useful on small trackpads because you can move the mouse across the whole screen with one swipe but still position it accurately if you move your finger slowly.
I know that ChatGPT is sometimes wrong, but it gave me a source that seemed legit.
A study by Dr. Levi Harrison, a hand surgeon who specializes in RSI, found that gamers who used high mouse sensitivity and mouse acceleration were more likely to develop RSI. He also found that gamers who used lower mouse sensitivity and no mouse acceleration were less likely to develop
So at the very least is a real person and appears accurate to his claims
In observing high sensitivity play, it is clear that there is more of an isolation of the hand and wrist in regards to movement. These players will flick their wrists aggressively, hence engaging the anatomical structures that are at risk for developing RSI including the carpal tunnel, the wrist, joints, tendons, etc.
Reads as though the shorter, violent action of wrist flicking is claimed to be more damaging than constant, slower movement.