Embedding images in an object, is it relevant (correct) now?

Question

HTML

I completed my crutch to webp so that if the browser does not support this format, the image is loaded in, for example, jpeg .
And then, by chance, I stumbled upon the "opportunity" to embed images in this way:

<object data="image.webp" type="image/webp">
  <object data="image.jpg" type="image/jpeg"></object>
</object>

Of course, it was far from talking about WebP , but for my case, the method fits perfectly. I checked support in IE8 - everything is in order ...
But here's the problem: how correct is it to do this? How good is this practice, and are there alternatives to this at the moment?

Answer 1

works - right