JavaScript skills are in demand almost everywhere even if it is not the primary language or skill of a given job. Almost nobody receives any kind of formal education or training in how to write in JavaScript. If you work for a web based company you WILL at some point be tasked to write in JavaScript.
When developers, who have never touched JavaScript before, are tasked to write JavaScript one of a couple things happen. First, they will attempt to write Java (C# or whatever) in this language because the syntax roughly looks the same. Secondly, they will grab the easiest framework they can find and hope to fill in the blanks.
Essentially, at the end of the day, almost nobody knows what they are doing. In this line of work most people are utterly afraid to write code. We would be in much better shape if our biggest problems were developers or students cheating.
Some food for though: https://www.reddit.com/r/programming/comments/66hpqs/less_th...