Those people can CHOOSE to not attend. Just as those who want to attend, eat or watch can also CHOOSE to do so.
The era of cancel culture - where a loud group gets to 100% cancel something is slowly coming to an end, as people see LOUD and INSISTENT doesn't necessarily speak for everyone. And sometimes it's inappropriate or just stupid. People need to have SELF-Accountability. If it's a trigger for some, they can simply not attend and watch.
The Nathan's Hot Dog eating contest is put on by the Nathan's Hot Dog company. They don't hide what what they make and represent, (meat hot dogs,) or what the contest is about. The title of the contest is as clear as day.
If Impossible Burgers wants to do their own contest, or a non-eating/fasting company, or a healthy eating company wants a booth to put out their own info and event, they can get a permit to put on their own event TOO.