I’m a Buddhist, so I really do see what you’re saying about personal responsibility and agency, but the other problem I see is that the companies at the forefront of these ultra-addictive industries (including mass social media) get busted eventually every single time for working overtime to hide what they knew about how damaging their products can be, and in fact to convince the public that their products do the opposite of what they actually do.
Does nicotine have some beneficial health effects? Yeah, it actually does. But do they outweigh the downsides (and societal costs)? Absolutely not.
I do believe strongly in individual freedom of choice, but only under a paradigm of informed consent, and companies like Meta have never allowed that to happen and they never will, because the truth getting out could destroy their bottom line.