I'm generally a fan of ABS, Traction Control, Stability Control and other electronic safety features. In some cases, yes a very skilled driver can do just as well or better than the system. But most drivers on the road are not very skilled, or even if skilled & experienced, not always paying attention.
I consider myself a skilled driver who has had plenty of practice playing in snow parking lots, and I lost control once in a non-ABS vehicle when my rear tires locked up on wet pavement due to a pavement change on an exit ramp. I believe ABS would have saved me in this case, the lockup & skid occured too fast for me to correct it.
Some of the more advanced features like stability control, emergency braking assist, etc do actually get better performance from the vehicle than a driver can because they have more control. For example, emergency braking assist uses the ABS pump to rapidly apply full brake force when it detects you are hitting the brakes agressively in a panic stop. It does this faster than a human can and this shaves a few feet off of stopping distance. Or stability control, where it can individually brake one wheel to correct an excessive yaw rate that would result in a skid. Can't do that with the brake pedal.