PDF is good if all you do is just want to press the print button and it comes out of the office printer. But there is so much more to professional printing and if you would give me a pdf, one of the document formats that is by design terrible to edit, I would probably write you a pretty angry email. But maybe I’m out of the loop when it comes to professional printing because I didn’t really have much contact with it since like 20 years ago when I worked as a dev in at an ad company.
We have a lot of topics about this on the forum, you can use the search to find more info and see replies by some of the professionals on this forum. Here are just a few examples but there are many more