Euro nymphing is not as easy as watching a strike indicator plunge under the surface at every strike, but not by much. However, Euro nymphing is definitely more effective and, arguably, more entertaining due to the attentive nature you need to do it effectively.
I would say that dry fly fishing is more difficult to master than euro nymphing or tight line nymphing. To start euro nymphing, you do not need to memorize the technical details that experts know to get the job done, such as bead size, bead weight, hook gaps, and leader length or thickness. Nor, do you need to be proficient at casting or mending as you do with fly fishing dry flies.
To give you an idea of a basic euro nymphing cast, it’s more swinging the weight of your fly or flies and a flick than a back-and-forth cast. With tight line nymphing, your leader and fly rig does not have the same thickness as a typical tapered leader you would get at the store or online. The euro leader is made up of multiple sections that vary marginally in thickness and is constructed by thin, flexible monofilament and fluorocarbon sections. It is designed for short casts and reaching into pockets.