"Tap to click" is presented as a "ON or OFF" button, which is technically incorrect, because if you deactivate it, it will become "Press to click". A Radio button would be more accurate design-wise for these two functions, so "Press to click" is properly presented.
Currently it's possible for users to assume that turning it off will brick their touchpads by making them clickless.
Radio buttons aren't appropriate here because tap-to-click is not mutually-exclusive with press-to-click. Press-to-click never gets disabled no matter what you do. I don't think there's a real problem here.