i think you are assuming a level of computer literacy that doesn't exist in the general population. most people seem to not actually know where data goes when they put it in their phone, how that data is used, or what actually happens on computers in general. They mostly appear as magic to them.

"Do not share personal information online" is a warning that has been heeded since the internet was created. You don't need tech savvy to understand that message, just as you don't need to know anything about zoos to understand "Do not enter the lion cage".

With tech savvy it is possible to understand the dangers well enough to dismiss the common advice in certain cases, but if you don't have it — you had better listen to what others are telling you. If you wish to dismiss it, you are on your own.

The problem is as follows: There is a subset of the population that tends to trust things you say, and this subset is fairly large.

The solution is that we need to make it so that the majority no longer trusts anything people say.

There will be no negative knock-on effects for this, I'm sure.

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To be less glib, I don't really see a good outcome of this in the long term. If everyone developed the right level of op-sec given the amount of bad actors on the internet, we'd effectively never communicate with another person again.

I can totally imagine our intel agencies and foreign state actors having a field day with this, as mirrored here: https://www.youtube.com/watch?v=bWTyvvb8GFs

I am being downvoted for being real. How is the general populous not aware of it? That's wild. Again, you have to be aware of this. It's like privacy 101