Developers have a finite useful lifespan and they need to pick their portfolio of techologies wisely if their journey is not going to be an anxious random walk chasing the latest fad.

You cant only pick "winners" but you almost need to develop a sixth sense for what will be a valuable and long term addition to your finite toolbox.

Looking at tech attributes is just the start. business and community context, complementarity with other pieces etc are all the subtle factors that may help avoid wasting energy in short lived pursuits.