Yeah I agree. But again, I don't think that really is the point. It's one point, and a valid one, but it doesn't address what Meta has done.
Someone determined enough to find her home address would eventually find it (with or without her social media posts).
And of course the task is made easier by combing through her posts, so less determination is needed. Though the level of determination needed is still very high.
So yes, there is a certain level of increased danger due to her social media posts making it easier to find this information than it would have otherwise been.
However, Meta asking every user who visits one of her posts if they want to know where her kids live increases that danger by a literal shitton. Not to mention the fact that it used deleted posts which no stalker would even have access to.