So, all of these can be summaries into one phrase: cultural difference. EU has its own culture that favours a bit more government handholding and protection while America favours individualism and “let each other to decide”.
Yes. So it shifts to being an issue of to what degree we weigh 'cultural relativism,' that a foreign (to ourselves) culture is to be judged by its own beliefs/values vs. the idea that there is some objective standard of what is right/wrong, good/bad, etc... It's an important issue. After World War II, the Nazis were responsible for the horror of the Holocaust...but hey, they were the government! They could make the laws! And in the U.S., we condemn slavery from our pre-Civil War era as wrong, even though it was the culture (and law) of the time.
Adding to that, we are all the same species (humans), share considerable cultural influence and history (e.g.: collectively called 'the West,' if we're not including Russia and Asia), and we're mainly talking about contemporary first world nations. That said, people have diverse viewpoints and it's probably good that not every society runs exactly the same, as there's something to be said for diversity.
In that context, I'll take a look at examples you raised.
As such, we have a terminal obesity problem. Or a pandemic of “doom scrolling”. Or large chunks of people sitting all day barely moving to anywhere, including commuting because everyone drives.
Some would say that's a 'free will' problem, because many people in the society don't choose their lives to suit the ruling powers. The fat person chooses to overeat/under-exercise. The phone user chooses to doom scroll. Etc... Power and responsibility to together. People who abdicate personal responsibility will come under the management of a nanny state. They might be slimmer and doom scroll less, but is that a price one is willing to pay?
Many parents here in Australia are not happy to see their kids glued to their iPhone etc all day all night without care.
Where did the kids get the phones? Are there not parental control features available, such as Screen Time? I'm old enough to recall when many disdained people (including kids) spending hours per day glued to t.v. sets, which carried lovely nicknames like 'the boob tube' and 'one-eyed babysitter.'
Now, regarding your slippery slope argument, while I agree with such argument in a vacuum, by offloading responsibilities to individual, we risk another slippery slope: more and more individuals become problematic, and they start hurting other normal people, causing problems, taking up police resources and maybe also social welfare resources and so on. Yes it may be because said individual is irresponsible and doom scroll too much that he/she develops extremism views. What will happen next? He/she would rally more people online with similar views, and we have a gathering that might turn into violence. At that point, the entire society has to pay the price for tampering their views and control their actions so they don’t just start shooting at people randomly without care.
Now this...is deep. With deep ramifications for a society. Key examples would be claims of 'hate speech' and the example of Holocaust denial. In the U.S., we have founding principles of Freedom of Religion (which isn't just about theistic beliefs, but the right to hold whatever moral/value beliefs you choose) and of Speech (to share your views). And freedom of assembly, so we can get together with like-minded people. Yes, sometimes that turns ugly - racism, the Klu Klux Klan, Holocaust denial, etc... But a popular sentiment has historically been 'I disagree with what you say, but I will defend your right to say it.'
What you describe sounds like what in the U.S. might be considered 'the thought police.' A person with detestable views might socially network with fellows, persuade some newbies to join the cause, and that could escalate and cause harm. And we have laws against 'conspiracy to commit' crimes, inciting a riot, harassment, etc... And beyond the laws, there are social norms...I'm no fan of politically correct 'cancel culture,' but there are some blatant obnoxious displays that could trigger pushback.
But what you describe sounds like it could be used in a more collectivist culture to curtail individual liberty in order to prevent people from choosing more 'extreme' views so that it doesn't get to the point of having to arrest (or kill) a public shooter or quell a riot, etc...
I understand the logic, but on some level the government is then deciding what we're 'allowed' to think. What views we're allowed to hear so as to inform our thinking.
Interesting how concepts such as individuality vs. collectivism tie into government regulation of big foreign companies. How many people from the U.K. are on this thread? What do you think of the arguments Shirasaki (in Australia) and I (in America) debated? What of the rest of you what's traditionally called 'the West?' Hardly any country is absolute on such matters; what's your shade of gray?