Unfortunately, Russia would not hesitate a second to use these Russian maintainers to include some shady stuff into Linux. Russia used everything they can to their advantage.
Now, we can wait for that to happen and have all sorts of issues when some backdoor gets distributed on a massive scale on a lot of Linux systems, or we can be realistic about the situation and take action before that.
I would not trust anyone from China to work in FOSS either, since they are exactly the same.
Hate to break it to you, but if you live in Russia and can be useful to the government, they will make you useful. Unless you don't mind you, or your family suffering and dieing, there is no stopping that.
Russia has no law to protect its citizens, only to scare and oppress their citizens. If Russia wants you to do something, such as working in a backdoor in software, you have no choice. So it is a good choice to not leave that door wide open in my opinion.