Those are great examples because they show that leaving it all up to the individual is not enough. All of those are regulated by the state because we as a society recognised they were doing their damnest to screw everyone else for their own gain. Social media is going the same route, with several countries already introducing bills to prohibit them to minors.
There is another discussion to be had if we’re going about it the right way (I certainly do not support privacy invasion in the form of age checks), but it does show we’re recognising its harm.
But if we are talking about the individual, the one inserted in the society, which is temporally bound, the conversation changes. We have to admit that it isn't enough to wait for laws and culture to change in order for the individual to be able to protect him/herself. To be a functional adult is to recognize what's around us that is harmful and do our best to protect ourselves. This is why if people recognize the harm social media is doing to their attention and to their ability to be bored they only have themselves to blame if you don't take action, because only blaming the multi-billion dollar industry for the habits they exploit won't do much for the individual.