Backdrop-filter creates pseudo element?

Where??? I must be missing something!
I couldn’t find how to connect a property to attribute, and saw this request: Add data attribute to Components and their properties

That’s why I was thinking using a paragraph block as the link, so that the paragraph content is used to explicit the link (instead of title or aria-label attribute) but with opacity: 0, since I don’t want it to be displayed.

This is actually working well, a bit tricky, I admit, but the absolute positioned link is already kind of a hack, so…