The video mentioned support for PoE (with a HAT) as a feature. Why would they specifically point out an addon that doesn't come with the board as a feature of t

The video mentioned support for PoE (with a HAT) as a feature. Why would they specifically point out an addon that doesn't come with the board as a feature of the board? PoE HATs already exist apparently, and are quite pricy. But I don't consider Arduino ethernet shields saying arduino comes with ethernet.