SCH's are still actively being punished from the perception that in 2.0 they were "overpowered" when they simply had a complete kit at that time. Most healers now, have all the tools that SCH's had then (a mix of barrier and regen).
It's ridiculous.
Combined with the fact that in the 6.0 pre patch live letter the devs literally said (paraphrasing) "We don't know how to improve scholar anymore / we don't know what to do with them"
Kardia is essentially our old Embrace macros that they took away from SCH.