Mute is a remarkably helpful feature, both for threads that one finds irksome or doesn’t like the direction of, and also for users.
That said, there’s a difference between aspects of food being inherently political and wanting to make every discussion on a food forum political.
For those who seek the latter, there must exist political fora that can include a discussion of food politics. Moderators there are likely more willing to deal with how charged the discussions might inevitably get.
How to tell if someone is more interested in a political discussion than a food discussion? If they mostly participate in threads that veer that way, or intentionally take other threads there (and then complain that others don’t want to engage in a political discussion, which is what started us down this particular road).
Easy to check one’s own posts and figure out if they are more about food or more about the politics of food and spend one’s time accordingly.