I reflect on the Polynesian sailors that use no instruments at all. And I compare to our western movement to ever increasing reliance on technology.
A few years ago two traditional boats crossed paths on, of all places, the Erie Canal. The Hokule'a, a Polynesian catamaran and the Draken, a traditional Norse ship tied up in Sylvan Beach, NY. The Hokule'a used traditional navigation techniques and was towed through the Erie Canal. The Draken was powered by a diesel and had a full suite of electronics, radar, vhf, chart plotter, AIS and so on. The Hokule'a was built of fiberglass, the Draken was built of wood using traditional methods. An interesting mix of technologies between the two boats.
Modern chart plotters are much more than a navigation device. Ours is an AP controller, radar display, instrument display, tank level display, tide and current source, sailing tactician, route tracker, and more like, sonar display, video display, entertainment controller and I'm sure I left something out. I seldom use it actually plot a course, especially if the course has more than 2 waypoints.
My current favorite plotting program is Aquamaps. It is fully featured and very affordable at about $15 a year plus reasonably priced charts. If you have a late model Apple Silicon (M1 or M2) Mac it will run on the Mac as well as iOS and Android tablets. In addition to the usual features, it has the most recent Corps of Engineers soundings, wind data, swell predictions, and currents. Works best with a cell enabled tablet. Traveling on the ICW it is almost essential because of all the shoaling that happens along the way.