Comment on
Make Inkscape installed through Flatpak callable in the terminal as 'inkscape'?
Reply in thread
If that's the case, it's a bit of an ugly hack but you could make a wrapper script placed in /usr/local/bin/inkscape like this:
#!/bin/bash
flatpack run org.inkscape.Inkscape ${*}
(the ${*} will pass along all the arguments that the wrapper script was called with)