It isn't automatic for me unless I try to skip a sponsored segment myself, then it will kick in and skip me to the end of that segment with a popup above the scroll bar saying they did so.

Might just be the channels you're viewing. This video should have a "Jump ahead" appear around 0:19: https://www.youtube.com/watch?v=rs5PfanIkC0&t=1s

On the TV app, if you hit the forward button it instantly skips over the entire "commonly skipped section".