I just started a new position, I have to learn at least 2 new languages (on my own time) which I need to be proficient in basically immediately. My very first project was, fix something in this new project which uses a new language, you have 3 days. And I felt lucky to have been given 3 days instead of 1 so I could learn the language. And then dozens of new frameworks and complex tools, complex and evolving architecture. In 2 months I will have my first week as being the point person to fix anything that goes wrong in production. And I feel like this is ok, this is normal.
I wonder if most engineers now are just permanent amateurs hopping around between tools and projects, learning just enough to make it work without breaking, but not knowing how to build things properly. How many years would it take to really become expert in that language? Even if you focused all your time on that, by the time you have mastered it another language will have come along to replace it, or the language itself will have been transformed into something new.
If you stay still and become an expert in something you run the risk of losing your relevance and not being able to get another job in just a few short years. 25 years? Will the company you work for even be around in 25 years? Doubtful.
Then again, back then they didn't have Stackoverflow and all the resources we have now that make it possible to learn so much so quickly.