[lsy]

I think the wide variance in responses here is explainable by tool preference and the circumstance of what you want to work on. You might also have felt "behind" not knowing or wanting to use Dreamweaver, or React, or Ruby on Rails, or Visual Studio + .NET, all tools that allowed developers at the time to accelerate their tasks greatly. But you'll note that probably most programmers today who are successful never learned those tools, so the fact that they accelerated certain tasks didn't result in a massive gap between users and non-users.

People shouldn't worry about getting "left behind" because influencers and bloggers are overindexing on specific tech rather than more generalist skills. At the end of the day the learning curve on these things is not that steep - that's why so many people online can post about it. When the need arises and it makes sense, the IDE/framework/tooling du jour will be there and you can learn it then in a few weeks. And if past is prologue in this industry, the people who have spent all their time fiddling with version N will need to reskill for version N+1 anyways.