Sure. However, characterizing this as a privacy failure is egregiously wrong.
Imagine this scenario:
You walk into the public park in your hometown. Someone has put a machine there with a keyboard on it. It has a sign on it that says, "Any words you type here will be automatically copied to hundreds of machines owned by different people all around the world."
If you type words into it, they are indeed copied to hundreds of machines owned by different people all around the world.
That is not a privacy failure.
It's a publicity success.
Nobody is fooling you into copying your medical records or your criminal history into that machine. You can type into it whatever you like. You can post URLs. You can post poop emojis like Elon Musk does. You can post tankie propaganda. You can create seventeen different fake identities and post ASCII art of your gonads.
None of that is a privacy problem.
Now, if seventeen years later you want to take back some things that you wrote, because you live in Florida and it's run by the DeHitler Party, yeah, you've got a problem. But that problem is no different from if you had written a print magazine article or a book with your anti-DeHitler views.