> his is a web standard and expected to get buy in from Safari and Firefox before shipping to users.

1. It's not a standard. It's a scribble on a napkin in a working group's repo: https://github.com/WICG/html-in-canvas Created and edited by people from Google.

2. Chrome continuously ships "standards" like this that they create with no buy in and against any and all opposition.

3. Neither of your links have any relation to HTML in Canvas.