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Comment by troupo | Hacker News Reader

> WHATWG have removed features before, e.g. frameset, font, and applet elements from HTML.

> All of them were rarely used and had better alternatives available.

"Rarely used" is not enough of a justification

nit: document.applets is not the same as the <applet> tag.

    Note: Support for the <applet> element has been removed by all browsers. Therefore, calling document.applets always returns an empty collection.

    The <applet> element has been removed (Firefox bug 1279218).

Also see https://github.com/mdn/content/pull/26850 which removed MDN docs for the element a couple years back, citing removals from major browsers.

<font> and <frameset> are still implemented in browsers, though, even if they are fully deprecated and marked by WHATWG as obsolete and non-conforming: https://html.spec.whatwg.org/multipage/obsolete.html#non-con...

Thank you for the correction!

So a feature was removed from the spec and it is still supported. I don't see how it would be bad to remove XSLT then?

There’s an explicit deside to unship XSLT on the browsers’ part, from what I understand. That’s what motivated the spec proposal in the first place.