Let’s look at things in a fair way.
Holy Paladin: Repentance - 15s CD
Evoker: Sleep Walk - 15s CD
Mistweaver: Song of Chi Ji - 30 second cooldown
Priest: Psychic Scream - 30 second cooldown
Shaman: Hex - 15 second cooldown
Restoration Druid: Cyclone - no cooldown, faster cast than any of the above
Now.
From spellcasters, only Mage and Warlock can spam CC without a CD - Polymorph and Fear.
Spellcasters are more inclined to have a spammable CC, which is why Moonkin should keep Cyclone without a CD.
HOWEVER.
Being completely removed from the game, crowd controlled for forever, BY A HEALER, is absolutely obnoxious.
The instant Entangling roots in Tree of Life form are the followup to the Cyclone spam.
There is absolutely no logic for a healer spec to have the best CC abilities in the entire game. If a Resto Druid wants, he can play Maim and stun you for 5 seconds - the same stun a Rogue has. Can Vortex you. Root an entire team, Mass Root, instant Tree of Life roots, 0.5 cast spammable Cyclones with Heart of the Wild, and Bash, which nobody understands why is still a 4 second stun after 98% of all other stuns in the game got nerfed back in season 1.
Fix Restoration druid before another season gets ruined.
I will remind everybody that this spec also didn’t have an immunity (Tranquility) until late Shadowlands. Now it’s borderline immortal, does the highest healing only being in competition with Preservation evoker, has failure prevention passives such as passive tree NPCs healing + auto frenzy + barkskin in stun.
Please. Fix. Resto Druid in PvP. This is a literal abomination of a healer design and is toxic to every single other healer spec.