There’s very good arguments to be made on either side, and neither side is the “right” side, it just depends on what your values are.
Personally, I like being strict with my own diet and fitness, but being free to take a break and pig out on whatever junk food I feel like. A world without Coke and McDonald’s would be sad to me, even if it is ultimately healthier for the population in general.
I find it harder to argue for why you should be able to enrich yourself at the expense of others while singing “But personal choice!” to wash your hands of it all.
Comparing it to tobacco or alcohol for example, I don't think it's wrong to let people chose to consume them, but I don't think it's a bad idea to restrict them being sold to young people or restrict their ability to advertise. Imagine for example a cigarette ad for children. The tactics used are fairly similar.[3]
[1]https://www.ucsusa.org/resources/how-coca-cola-disguised-its...
[2]https://www.npr.org/sections/thetwo-way/2016/09/13/493739074...
[3]https://sugarscience.ucsf.edu/soft-drink-companies-copy-toba...
Products are being developed to intentionally surpass our ability to self-regulate, whether they be food, medication, etc. People get paid really good money to sit in labs and figure out how to make their product more addictive, and we're just expected to just be able to say "no" because free will?
0: https://www.usnews.com/news/healthiest-communities/articles/...