The thing with most carcinogens is they are cumulative. If people are going to continue to consume lots of red meat, cutting other carcinogens does help.
Obviously, the media would be better from a public health point of view to focus on the red meat. However, the media focuses on news and changes. Red meat has been a known carcinogen for a while. Not to mention bad for the environment and ethically problematic. It’s led to a raise in veganism and vegetarianism and many people have cut red meat in particular or are flexitarian.
The problem with sweeteners in partiyos that many people consume them in an effort to be healthier, cutting their sugar intake. Over time, we’ve found out that they are more problematic than we knew. Risks for diabetes as well as cancer.