[kenha]

I agree to this, but in the sense that you should dig deep and understand how something works under the hood.

For example, ElasticSearch is “fast”, but what makes it so? What trade offs were made to make it “fast”?

You may start seeing patterns on how good/bad tech stack are built (aka the meta), and those meta would help you a lot down the road in knowing what type of toolset you can use, common type of problems a given architecture would exposed to.