To people unfamiliar with intricacies of Russian internet moderation, RKN is a bunch of self-righteous clerks who would arbitrarily try to ban anything containing forbidden content ranging from understandably immoral or dangerous things like cheese pizza and bomb making tutorials to clapping a website for uploading a copy of a book whose author is particularly butthurt about copyright.
The problem is that instead of limiting the access to pieces of content illegal in the country, they just cut the access completely for utterly asinine reasons and, what's worse, they can use many excuses to ban sites that government finds unfavourable in some way. Tumblr got blocked for a tutorial on how to make a noose, Telegram almost got blocked because terrorists may have used it for message encryption, 4pda (the largest forum about phones and other tech) got blocked because someone posted a stream of a sports game, a kiwi-like gossip forum got blocked for posting
info about a governmental worker's affair, and RKN even tried to make using all torrents and VPNs illegal. Just to give you an example of their antics, so it's not just getting their panties in a twist over funny images of a famous Austrian man.
It was unbelievably frustrating when I needed to access some completely innocent tech website for a uni project, but the access to it was blocked. I don't care - I always use a VPN now and don't have problems with that crap anymore, but my relatives and acquaintances treat me like some sort of technowizard for showing them how to access blocked sites. And it just keeps getting worse.
TLDR: Shit sucks, get ready for Iron Curtain 2.0