https://www.techradar.com/news/could-we-really-see-an-iphone-x-plus-with-stylus-support

Another day, another rumor that we'll be seeing an iPhone with Pencil support - but could that really be about to happen with the new iPhone this year?

The obvious reason for this to never occur is Steve Jobs famously stating that the iPhone would never use a stylus, in proclaiming the finger is the perfect tool for the then-new iPhone.