This is not true. Russian government does not dictate FB and YouTube (which it does not own), and they would have to force ISPs to block these sites if they wanted to ban the content. I doubt ISPs would ban them themselves.
Do not be so fast with 'not true' claims. Russia has at least three social networks, each with audience bigger than russian audience of Facebook and Twitter combined. All three remove anti-putin groups, etc.
the third one is Moi Mir (https://my.mail.ru), an extension of by far the most popular email service in Russia. Mail.ru corporation actually owns all three of them.
VK absolutely does remove anti-putin groups and events. [1]