It is available if you have a subscription and are running version 2207 or greater, however, you may get different results depending on the type of mouse or trackpad that you're using. If the mouse or trackpad is not a "precision" device, then you should be able to scroll smoothly by dragging the scroll bar handles. Scrolling by using the mouse wheel or touch pad with a non-precision device will move by some number of lines (text height) rather than by a number of cells. If you're row height is the same height as one line of text, it will see to scroll as it has in the past. If your row height is different than a single line of text, then you should notice that you can stop in the middle of a row.
Please send feedback from within Excel if you have a subscription and are having trouble with smooth scrolling.