I tried to look through a lot of cases. It seemed like most every case was leaking information, threats of actual violence, stolen valor, or other generally agreed upon crimes. There’s truth to the notion that a government is more likely to look for crimes if you’re a specific person, but I don’t know of anyone in the modern US who goes to jail for lying about things the army has done. I use the word “lying” because Russia courts make the claim that that’s what happened here.
Also, there are more recent cases of Russia imprisoning someone for essentially this same crime.
I think you can give some people great parents and you just might be unlucky enough that they don’t turn out to be nice people. It’s probably worse now than ever in history because people can have one bad day and then they can follow it up with permanently radicalizing themselves on the Internet.