Authenticated image placeholder for dynamic content macros?

It doesn’t look like there is any way to get a jwt with an image placeholder request. This is a big issue for me in the addon I am building since it could leak sensitive information.

It looks like this was brought up a few years back (Image placeholder security) but the ticket link mentioned doesn’t work for me so I don’t where this was left off.

Does anyone know the status of the feature request mentioned in that old thread? Are there any work arounds?