In short: in Qubes-Whonix 14 after upgrades new AppVMs and DispVMs are created with a copy of the latest version of Tor Browser after
whonix-ws TemplateVM was upgraded.
- https://phabricator.whonix.org/T726#14833 is resolved in Qubes-Whonix 14 after upgrades
tb-updater and /usr/bin/torbrowser will refuse to start in Qubes DVM Template. (Advanced users could overwrite the function easily using a config snippet but I doubt there is a use case.)