I was unable to find any recent Logitech macOS software that supported my old mouse. Perhaps you will have more luck. If you do, look for preferences related to scroll acceleration. If they are there, disable them. I’m curious to see if this provides the behavior you are looking for (or not). Smooze appears to.
Obviously, we can continue the debate as to what Grasshopper’s behavior ought to be, but I’d love to hear from others on this. Perhaps we can provide a preference in Grasshopper on macOS to pay attention to scroll acceleration.