It is related to active use of this service by violators of Russian laws.
Attempts to determine hosting provider for such web-sites using whois return CloudFlare IP addresses, hiding whereabouts information for this site in Internet.
This makes interaction between Roskomnadzor and real hosting provider harder and, factually, eliminates the possibility of removing illegal content in time, to restore٭٭ access to the blocked resource.
CloudFlare representatives are refusing to cooperate and do not react to official Roskomnadzor notifications.
Many conscientious resources using this CDN are blocked by ISPs in Russian Federation due to lack of reaction from CloudFlare.
To avoid such situations we recommend hosting web-sites using native (russian) hosting providers which abide Russian laws in good faith and timely restrict access to internet-resources and information which is prohibited for distribution in Russian Federation.
٭yes, it is as bad as it sounds
٭٭implying access will be restored after "illegal content" will be removed