I mean, the article starts by explaining the fact CSS anchors was pushed as a chrome feature. Only browsers that inherit from it by default will have this.
The article doesn't mention that it's not supported by other browsers. The two things (pushed by chrome / unsupported by others) are not consequential.
If you don't clearly state it and people start using the shiny new thing you're hindering the few alternative browsers out there.
> This is a draft document and may be updated, replaced or obsoleted by other documents at any time. It is inappropriate to cite this document as other than work in progress.
If you don't clearly state it and people start using the shiny new thing you're hindering the few alternative browsers out there.