Big picture this is a good reminder when the <i>next big thing</i> comes along &lt;cough&gt;React&lt;&#x2F;cough&gt; but he forgets where we came from.  Prior to Angular, the major way of doing web-apps was with rendered templates that would replace whole swaths of html and so the &quot;updating the DOM&quot; step truly was more expensive than the Javascript driving it.  This is the problem that Angular (and newer) frameworks&#x2F;libraries sought to address.<p>But there&#x27;s one more consideration...isomorphic rendering.  If a framework can be rendered on the server-side then the time-to-interaction only matters if it&#x27;s longer than it takes for the user to mentally process the page and take an action.