People wildly underestimate how dedicated and adept some people are at finding PII given even minute details [1]. The only real way to avoid sharing PII is to stay off the internet entirely.
Even then, pandora's box has already been opened. Your PII is available even if you haven't explicitly chosen to share it [2].
Once it's out (and spoiler alert, it's out), "stepping away from the computer" is no longer an option. The article describes in detail how it transitions from online to real-life harassment: Swatting, stopping by your personal residence, calling your work, calling your friends and family, etc.
Yes, it happens to people of moderate means and very minor celebrity. Yes, you can suffer physical harm or death as a result [3]. Yes, we should also try and solve the swatting problem from the police side as well.
1: https://www.dailydot.com/unclick/4chan-shia-labeouf-secret-l...
2: Equifax
3: https://www.cnn.com/2018/01/30/us/kansas-swatting-death-affi...