I’ve been using old versions of Mac OS, like Mac OS 8, with both new hardware (modern trackpads) and original hardware (ball mice). The ball mice are much more precise than modern trackpads, when you’re clicking on something. If they stick, it’s frustrating and you have to wiggle the mouse around to get it to land on your click target, but once the cursor is over your click target, you can click on it. When you try to click on something with a trackpad, what happens is you end up moving the pointer during the click.