I doubt if someone wants to introduce a backdoor, they would do that with a russian mailing address. People removed were open and transparent about their nationalities which means there is even less chance them being bad actors than some random guy pretending to be American.
Reading the article, this is a typical case of burnout. It’s happening to every artist, content creator, modder, foss developer, etc. On the long term we all have to find a balance or we won’t last long. And tbh, just learn to ignore the trolls and focus on the positive things and your passion or they will win. You can’t take them seriously. It seems the person in the article has already found herself another passion project and could throw away the suffocating chains of responsibilty and something she did not enjoy anymore and move on. I think instances like these really show us we are all just humans and we should appreciate the things we are given.