Similar graphics effects in QT or other native technologies not only do not redline my laptop, they don't even raise the core temperature a single degree.
I get enthusiastic about cool JS technologies just like most devs, but I feel like we're moving backwards.
We've been layering on years of HTML/JS additions that aren't allowed to break backwards compatibility. (Google's Blink project is one example of an effort to try to undo some of this.)
On a related note, if you create your whole app in WebGL, you then lose all the benefits that HTML/JS/CSS brings, like simple user input.
Finally, WebGL is not even available to the general public yet. As far as I know, it's still behind feature flags on almost all browsers.
Have any major browsers removed the WebGL feature flag? If so, it's very recent.
WebGL is very cool, but it's still depressing that web devs have to program in GL to get decent graphics performance.