There is obviously truth in this, but I think it is more often the case than many people think it is that it is more efficient to learn the better tool "good enough" than to use the worse "I already know it" tool.
For instance, I've seen lots of people not want to learn sql and instead write complicated imperative implementations of relational primitives in the "I already know it" programming languages that are clearly "good enough" (because they are turing complete after all). But sql is usually a much better way to do this, and isn't hard to learn "good enough" to do most things.
Well, there's a balance. I'm not saying "never learn anything new, assembly's good enough and I know how to use it". Learn newer and better tools.
At the same time, don't learn every newer and better tool. There are too many.
You don't have enough time, even if you never do anything but learn.
SQL is enough better to be worth learning. The web framework of the week? Not so much.
And what's "worth learning" depends on what you're trying to do. For a home project, I'll use what I know, unless the goal of the project is "learn how to use X". For work, the question is whether it brings enough to the table to be worth the learning time. Sometimes it is; often it isn't.
Yeah what I'd say is: Seek out and be open to advice. There's a "don't know what you don't know" problem here, as always. But this is also part of the point of reading sites like HN! People here are saying "actually there are tools that are net positive to learn a bit because they are much better choices for particular niches". That is advice! It's fine and all to say "nah, I'm good", but in many cases that's doing yourself a disservice. I really do see people writing tedious for loops in go because it is what they're comfortable with, when they would be much better served writing sql and using a language with dataframes.
Most of the time people aren't just on a kick about selling some hot new thing (and I'm old enough that go was the hot new thing for me at one point!), they actually have relevant experience and are giving useful advice.
