Since this is the beginner forum, my opinion is that a beginner near any fast or deep water, or in any stream with roundish moving rocks underfoot, or doing winter wading in very cold water, should not only carry a good wading staff, they should also take it easy and think safety first.
There are just huge differences in the need for and value of a wading staff across streams, and you learn this over time .... some places, such as the letort, you probably won't even get in the water. Other places, such as the savage river tailwater, can confront you with tough moving rocks and more of a current. And crossing even small looking streams at high flows can show you what water pressure is all about. As with other safety things, a wading staff should not make you overconfident, but you are often better off with one at hand.
I carry a pair of serious trekking poles that not only have helped me avoid plunges into cold winter water, they also speed up my walking when I'm going to hike 5 miles to fish. Sure they take some time to carry as I fish, but I save much more time in faster and safer hiking. For wild fish, the good streams sections are often not near a road.