The only point I've made is that something being addictive and harmful is a reasonable quality to ban something for. This was in response to the user who said "there are plenty of reasons to ban tiktok, but this ain't it" (from memory, but close enough).
This doesn't mean that I think all things which are addictive and harmful should be banned. A total ban on alcohol would probably not be effective, and would lead to more harm than good, so I wouldn't support it.