A straightforward way to remove metadata from photos, MP3s, PDF documents, and other files on Linux.
I have also contacted the developer and waiting for a reply.
The developer replied!
"Hello,
Thank you for your suggestion.
Unfortunately, I only directly provide a Flatpak package as that is my development platform. If someone wants to provide a Snap package, they are free to do so.
In the meantime, you can ask the Ubuntu maintainers to keep their Metadata Cleaner package up to date, or use the Flatpak package.
Yours,
Romain."