The "Yes and No" answer by MalcolmDiggs makes good points, and I want to add to the "Yes". There has been a lot of effort around front-end design patterns that makes Web Development a lot easier. There will always be room at the top for talented individuals doing cutting edge work, but the middle and bottom end of the talent pool is being carved out by tools like bootstrap, angular, etc. You have a lot of back-end engineers doing basic data-binding on HTML, and using bootstrap to "make" the right "components", then you have a designer come in and make the CSS, etc look nice.
Add to the growing number of tools that automate a lot of the core constructs that websites now adhere, to, and...yeah...I'd say the future is kind of bleak for people who can only do JS/CSS/HTML.
<excursion>
The web is starting to look a lot more standardized these days than it used to. In a lot of ways it's less impressive from a certain type of aesthetic. I remember the web circa 2009 was a lot flashier, people showed off quite a bit more than they do now. Now, users expect you to follow well established design patterns. They want to get in, get their information/data/service and get out, they don't care about your cool little reflection animation on your buttons.
In my opinion the web has kind of grown into what it's supposed to be, a fairly simple user interface around information, dynamic content, audio/video, and web applications. All of these things used to blur into one another. I think you're seeing a fundamental shift in both a labor market (web development), but also in an increasing consensus among users, and institutions as to what the web should look like.
</excursion>
Edit:
I also want to add that this is what automation always tends to look like. There will always be special use cases, etc, but someone comes along and figures out how to build tools that cover 90% of people's use cases, we all adopt it and call it "standard" (cf photoshop, etc). I don't know what the back-end construct will look like, but it's happening. AWS killed a lot of potential operations work. Lambda, Heroku do a good job of abstracting 90% of most people's networking/scaling concerns. This stuff happens imperceptibly.
Add to the growing number of tools that automate a lot of the core constructs that websites now adhere, to, and...yeah...I'd say the future is kind of bleak for people who can only do JS/CSS/HTML.
<excursion> The web is starting to look a lot more standardized these days than it used to. In a lot of ways it's less impressive from a certain type of aesthetic. I remember the web circa 2009 was a lot flashier, people showed off quite a bit more than they do now. Now, users expect you to follow well established design patterns. They want to get in, get their information/data/service and get out, they don't care about your cool little reflection animation on your buttons.
In my opinion the web has kind of grown into what it's supposed to be, a fairly simple user interface around information, dynamic content, audio/video, and web applications. All of these things used to blur into one another. I think you're seeing a fundamental shift in both a labor market (web development), but also in an increasing consensus among users, and institutions as to what the web should look like. </excursion>
Edit:
I also want to add that this is what automation always tends to look like. There will always be special use cases, etc, but someone comes along and figures out how to build tools that cover 90% of people's use cases, we all adopt it and call it "standard" (cf photoshop, etc). I don't know what the back-end construct will look like, but it's happening. AWS killed a lot of potential operations work. Lambda, Heroku do a good job of abstracting 90% of most people's networking/scaling concerns. This stuff happens imperceptibly.