

The pyramids at Giza used to be smooth on the outside so people took pieces of them and built something else. I think they’re in a category with places like Angkor Wat. The sites’ importance decreased (religions changed, trade shifted, natural disasters, etc.) and it was easy for nature to cover them in sand or jungle and, poof, out of sight, out of mind.
It is very likely that they weren’t in fact totally forgotten. There probably was local knowledge about them that led white men with too much time and money, thinking themselves superior and as preservers of culture, to “discover” them. Tourism was for the elites and there wasn’t any money yet in preserving these old sites.
Are social media the root of all problems? No. Do they have a significant influence? Yes.
You mentioned spineless billionaires who eff around. There are instances of real harm. There is bullying (everywhere), there are schemes to make groups depressed (teenage girls on Insta), there is a lack of moderators that lead to genocide (Myanmar). These things deserve to be looked at by legislators when the sycophants don’t do it by themselves.
Social media addiction is a thing as well. Addictions in young people are bad. Parents should be on the front line of this. But that does not absolve social media companies from taking measures to curb certain excesses. Tobacco companies are not allowed to advertize to toddlers either.
So saying they’re just a tool, like, say, a hammer is insincere. You can use a hammer to cause real harm. You can deploy social media to cause real harm.
One of the greatest issues of social media is scale. People on the fringes of society who would be largely outcast in their communities can group and organize with much more ease. In the past, this was limited to the pub in three sheets to the wind discussions. Now you get sh!t like Q Anon, flatearthers, vax nuts, etc. - stuff that common sense in smaller communities would have moderated or stamped out now gets mass appeal. They seem much bigger as an online presence than they often are. But they get dedicated believers to start shooting.
The introduction of the internet has been compared to the introduction of the printing press in Europe. Both events caused a quantum leap in the dissemination of information with profound influences on society. After the printing press we got a century and a half of conflicts and wars. We’ll be well off if all we get here is a century of people typing in caps lock at each other.
We limit things in society. The availability of nicotine products, alcohol, the ability to drive, the availability of weaponry, antitrust laws, environmental protections, etc. I think we will not get past regulating social media somehow. By which I mean I don’t know how either.
One thing that is certain will benefit society is investing in education, teaching media savvy-ness to young children and all adults if possible, giving them the tools to sort the relevant from the distorted. We are largely unprepared for this and I include myself here having grown up with papers and landlines. But education is the saddest item in any budget, as the costs are high and the results take a generation to bear fruit.
Trump wants to dismantle the DOE…