Increased forecast accuracy and having weather routing software on the captain’s desk and wheelhouse has changed the game.
The framing of GC vs RL seems a bit crude to me. It doesn’t seem like two problems anymore, that of saving time and fuel vs weather, finding the optimum route seems like one problem. Once the route that optimizes the applicable parameters is found converting that route into a usable track is simplest part of the problem.
Also the ECDIS makes it quicker and easier to change the route when the situation changes.
Of course all the usual caveats apply, tools shouldn’t be used without understanding, objects in the mirror appear closer and so forth.