- Asking the X-Card player to leave the game due to discomfort is contradictory to the spirit of adopting the X-card "mission statement".
That has been the default answer since the 80s. "If you don't like it then don't play here".
It fixes nothing.
I do not believe that to be correct. It fixes the problem of players playing on games with content that they do not enjoy and players being forced to play games they do not wish.
All anyone can do is ask if content can be molded to their wishes, and if the playerbase does not wish to do so, they (the existing players) are not doing anything wrong by declining to do so. That's just the way life works. You simply have to accept that some games are not a good fit for your wishes, and (this is key) if the playerbase does not wish to alter the game to your wishes, then forcing them to so so would still leave you playing with people who did not wish to alter course for your sake to begin with.
- You don't go to a Catholic church and demand sermons on Xenu
- You don't go to AA and demand them not to talk about alcohol
- You don't go to a Magic: The Gathering night and demand everyone plays Yu-Gi-Oh instead
You ask. If they don't want to, then you find groups that will meet your criteria or start one of your own. It's a tried and true method that has existed for hundreds of years; ask Christianity or Satanism.