Roskomnadzor (the organization managing the runet blacklist) is known to ban sites for absurd reasons. For example, they added[1] github for a very old text about ridiculous ways to kill oneself (for example, as far as I remember, "sticking two pencils into your nose" and "pressing the Red Button" among them). After github blocked these for Russian ip addresses, the service was restored.
Either way, in this case I'd bet on incompetence rather than political play.
Either way, in this case I'd bet on incompetence rather than political play.
[1] https://news.ycombinator.com/item?id=8401784 — relevant HN submission