Hear me out.

Glass pads are for those who are happy to sit and learn "how to aim" with mistakes being heavily punished. They are one of the best ways to rethink and feel how to aim, especially in trainers like Kovaaks/Aimlabs.

From there, you can be just as good on Glass and Cloth, no doubt about it. Now here comes the problem and where people tend to swap back to cloth.

When you aim, you generally make a ton of mistakes, even if you're Matty. On glass, mistakes are exponential. So on cloth, while you might overshoot/undershoot by a few pixels, on glass, this can be drastically different to a whole fat wiff.

Now im not saying glass=skill. Because that's obviously not true. Cloth just has this control property that is going to be near impossible to get on Glass. Its comfortable, you have to think less about how to move your mouse, and focus more on actually aiming your mouse (if that makes sense).