It’s been relevant! Photoflow uses g’mic so there had been chance that dev would put code into g’mic and many apps would benefit - one great filter for all.
But as Photoflow dev said:
So raw converters need their own lens correction.
I’m not sure here why, but maybe g’mic in photoflow stacks after gamma and camera response so even though g’mic is able to work in linear space it doesn’t have access to linear data.