It's a throw away in the larger story at the end, but it highlights an important point. Reporter Luydmilla Savchuk, aka "the Troll Slayer," took a job at the Internet Research Agency in 2016 and then did an expose. In 2018, after returning from a conference on fake news, she found herself locked out of her FB account from November 2018 to mid-February 2019. No explanation from FB, but she believes it is because Putin trolls exploited the complaint process.