in the long term? Mostly. In individual area stories the temporary changes are more set in stone.
The primary advancement in the Liebra side quests are optional. You can minimize how many classes you get and pick ones that are more unisex changes (each tier has at least one meant to be like that). And you can avoid other changes. And there’s a change later that restores down under
After chapter one, I believe I didn’t add any changes that weren’t voluntary. But it’s certainly more something to work for than the standard way to play