I’ve noticed that learning curves aren’t equal for all people in all things. I think there’s something to be said on this subject around opportunity cost as well. In the time you learn React, what else could you learn?
Yeah, you're right about that.
But if you look at the job market, you'll see that there is a plenty of jobs related to React, so I think that, if you are looking for a job, it would be really good to know some React.
You don't need to React if you're working on the backend tho, but on frontend days of jQuery, Wordpress and PHP are long gone, and you should at least know the basics of the most trending technologies. That's where the money is :)
In the end, I guess it's all just about priorities, and your goals.
Don't be so fast to discount Wordpress (and the supporting LA/EMP stack).
Wordpress runs 32% of all websites that report tech. That is >50% of ALL content management systems in public use.
PHP as well, 78.9% of all reporting public websites.
Not going away any time soon.
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