Mind you, such caution used to be common sense behavior for everyone. Then Facebook[1] happened. The second Eternal September.
It also seems to have become common for professionals to promote themselves under their real names without keeping separate, anonymous accounts for non-business activities.
When it goes well they're growth-hacking (puke) their careers, using all their twitter followers and likes and GitHub projects or whatever to market themselves and/or their services and/or products they're paid to sell. When it goes poorly we get stories like this. Live by the sword, die by the sword. (I don't know that that applies in this case, but it has in others)
The situation in the article is really shitty, of course, and I don't mean to minimize that. I'm just puzzled that throwing your real name on every corner of the Internet stopped drawing derision and advice to cut it out, at some point. It's why the calls for reducing online anonymity to end online harassment by strangers strike me as such a strange approach—the absolutely undisputed solution used to be more anonymity! It's a major cultural shift from the very recent past, but I don't see it brought up very often.
[1] Not just Facebook, obviously, but the timing fits.
It could obviously backfire. You say something that you think is fine, someone else gets offended, and they know exactly who you are. But generally, I think using your real name makes people more accountable for what they say online.
You might want to rotate your current one a little sooner ;-)
Separation is good opsec.