But only slightly more than I worry about brain-eating amoebas or being in a plane crash.
It's one of those things that yeah, it could happen. And it HAS happened to people, even just recently.
Some people use private browsers, or TOR, or whatever but my personal feeling is this: if "they" are targeting ME specifically, then they WILL find me and hang me out to dry, no matter what spy-techniques I'm using. LOL.
Lately, the powers that be have been going after the clients more than I can ever remember them doing in the past. (I've been around forever, btw) Just recently, they did exactly as you described and used reviews as evidence.
But really, what are the odds that you or I will get caught up in a big sweep like that?
I'm sorry if I sound unconcerned or cavalier, it just seems the odds for each individual having that happen to him/her are very slim. Especially if you're being even reasonably cautious, which in many of these cases, those who were so charged were absolutely not.
So use whatever level of caution and security that helps you feel a little safer. Probably couldn't hurt.
As with everything in the P4P world, each individual's choices and comfort levels are uniquely their own, and every one of us should respect that.