Just patched WRP to output the resulting HTML after JS is processed in a remote machine running headless Chromium as renderer. I then added a #Dillo plugin to make it easier to use.
The result is that many websites behind a JS wall now become readable in this old notebook.

Another example showing fosstodon Dillo profile being loaded via WRP

Another segment of the page under the WRP plugin, now displaying a list with links and tables.

Same page loaded using the WRP proxy now is displayed, showing a schematic.

Broken page with "You need to enable Javascript to view this site"