I think its more that Riot has a huge fear of mages, because mages meta means farming. Have you seen any mage been a slightly viable in the last 2 years? Here's a quick list of those few playable :
--> hes a jungler now
--> assassin not a mage
--> More of a ap bruiser now with short range
--> More of a ap bruiser now with short range

And one of the major problem (which affects supports as well) is the dumbass mana regen rework they did 2 years ago. Since then, no mage have been really viable for a long time (except for Orianna) in the mid lane nor the support role. Riot intentionally killed an entire class. Just play some aram and try to stacks mana regen items : You will always be out of mana. You need to stack tons of mana to be able to poke. God I hate this chinese meta
Remember when Riot said they don't make changes to force certain metas?
Good times, those were. I miss when things could grow organically without being godhanded.
Still Not touched
Able To one shot without stealth or w
Able to shot a non isolated target
Needed more stacks cos weak
Dmg is too high but here's The new rework
"But Morgana mid is cancer, she has a spell shield and her root is forever ynrtehrwea"
By the way, skillshots are dodgeable and Zed, Talon, and Karthus don't give a shit about her spell shield.
Edit: "But her waveclear" Newsflash, Aurelion Sol still exists.
What's the last time you faced Morg mid? Do you remember the experience?
- can 2 shot people
- can 2 shot people
- can 2 shot people
- all can 2 shot people
point is, the games damage has become so high that fights are just a game of footsies where one team is waiting for the other team to make 1 .... 1 mistake thats all it takes and bam the fights over, you just loss if you made the mistake and get hit, because now your either dead instantly or at 40% hp and have to leave or die to the next hit.
There is no retaliation plays anymore, and snowballing is at a all time high, this is why bot lane is PRIORITY, it = 2 kills every time, 3 if a jungler shows up, thats big right now for how fast damage scales and defenses dont