> assessed based on the value added to average persons life, vs. the overall cost to society and the planet.
Cost presupposes value. If I'm the buyer in a transaction, I am trading value in exchange for value. The 'cost' is value that I am parting with.
I'm making this pedantic argument to say "cost to society or the planet" is the same as saying that "society" and "the planet" value things, and that those values are at odds with what the individual values.
The concept of "value" presupposes the question "of value to whom and for what?" Only individual people can value things. "Society" is just an arbitrarily defined group of individuals, each with their own values. So at best, what "society" values is what the majority of the individuals within that group value. And "the planet" is a rock. It values nothing.
While I don't think it's your intent, this word game (what "society values") is often used as a sneaky way of justifying transferring value from certain individuals to other individuals. Whoever gets to "represent society" gets to place their values first and claim that it's OK to target the individuals that are "costing society."
The way to approach the issue of social media causing damage is to demonstrate that it is providing a dis-value to all individuals and that each and every individual has healthier alternatives that they can choose that present a greater net value. In some extreme cases, if there is no healthy alternative, and the majority of individuals decide that the dis-value is great enough, they may vote to pass legislation to make the "thing" in question either more expensive or illegal ... such as with the case of tobacco for example.