Removal from the Inkscape Website · Issue #87 · flathub/org.inkscape.Inkscape
github.com
The inkscape project is considering removing the flatpak format from the website's resources/downloads pages because of lack of maintenance. There is no maintainer of the flatpak/flathub format at ...

The Flatpak is already packaged and works well. It just needs to be maintained from a person that joins the Inkscape community.

This would allow further improvements like Portal support and making the app official on Flathub.