Former helicopter student pilot. Yes and no. The throttle still exists; the governor just handles it for you, except in the VERY unlikely event that it fails.

Former helicopter student pilot. Yes and no. The throttle still exists; the governor just handles it for you, except in the VERY unlikely event that it fails. You still need to train how to handle the throttle yourself for that case, but governors are not known to fail often. But in normal flight, you keep your hand off the part of the collective with the throttle because the governor is directly manipulating it. It's like the cruise control in your car, actually, and you can actually turn the governor off by preventing it from turning the throttle, in which case, it disconnects and hands full control to you.