I love this article but I'd like to add a nuance to it, especially after what Rick and I were just "talking" about in some of the sayings we listed.
A lot of people spend a whole lot of time on new stuff. What they don't realize is that there's a whole lot of things in old stuff that are quite new to them because they've never used a particular feature, didn't realize some better code than what they were using, or didn't realize that some supposed "Best Practices" established by a decades long, around the world "Band Wagon" is actually incorrect.
Sometimes you (used figuratively and not pointed at anyone in particular) don't have to adopt new products to continue learning. Sometimes it's even more advantageous to learn the stuff you never took the time to learn in what's already available because you because you were always try to learn the next "too cool for school" thing, which frequently doesn't make it past a year of being "cool" or "useful".
A recent example of "why are you using <insert too-cool-for-school_product_name-here> to do this" can be found in a recent article on this very site. If you examine the code they're using, MOST OF IT IS DYNAMIC T-SQL! Replace the rest with a very simple trigger on a couple of tables and Bob's your uncle. No need to learn a new language. No need to do something outside of SQL Server. No need on taking the chance of running out of memory, etc, etc.
People will frequently say, "Well... just because you can do something in SQL, doesn't mean you should". While I do agree with that, I'll also state that just because you can do something in PowerShell, Python, etc, etc, doesn't mean you should do it there just because you don't actually know how to do it in SQL.
They'll retort with something like "Well... you should broaden your knowledge". I laugh and remind them that they haven't tried to broaden theirs about SQL.
To that, they'll frequently come back with "Well! SQL Server is NOT the center of the universe"!
Cool! If you believe in that, let's go turn your company's SQL/database Servers off and see if you're right. ;P
To summarize, if you (again, used figuratively an not pointed at anyone in particular) really want to learn something new, learn what you've been missing in SQL for the last decade or two.
As a sad sidebar there, have a look at a lot of the conferences... almost none of the sessions are about SQL anymore. The good part there is that people who DO know some of the depths of SQL are going to get more and more valuable as time goes on and it's not going to go away anytime soon. 😀