When you get into technology, you should go under the assumption that you will be a student for the rest of your life. Otherwise you will get left behind. My Dad is in tech (I followed his footsteps). For as long as I can remember growing up he always had a book with him in his free time. He started with punchcards.
I don't mind learning, definitely. I got into this field because I'm passionate about software and I enjoy programming a lot. But while I have a full time job and a large-ish family to support, it's hard to fit "3 years of professional React.js experience" into my spare time to put on my resume, so that when nobody's hiring iOS developers anymore, I can still get a job. That's what I'm talking about. A lot of the skills are very transferrable, but I've already been turned down for a few jobs simply because I just don't have the in-production experience with the exact technology they're hiring for, even though I could pick it up pretty quickly.
Want to get some production experience with react? Tons of webdev projects are using it at Mozilla. Come on over and find yourself a good first bug :-)
"But while I have a full time job and a large-ish family to support, it's hard to fit "3 years of professional React.js experience" into my spare time ..."
I'm sure your got the bugs, but the gp ain't got the time
