what do you think of the mcu's take on the sorcerer supreme as a title?
It is really bad, imo. First because I don't like the idea that the Sorcerer Supreme is supposed to teach dozens of students in a magic school. This is not their duty in 616 (even in Strange Academy, it's common to see that Stephen is busy with other activities so he can't be a regular teacher, nor the headmaster).
Usually, the Sorcerer Supreme has one (1) apprentice and they're mostly busy with protecting Earth. MCU!Kamar-Taj gives me "training soldiers to fight mystic wars" vibes and this is not what magic wielders do. Magic just simply happens to them, they're touched by it, and they usually have a personal journey, each one wiith a different kind of magic that shapes their lives (Wanda, Illyana, Nico, Loki, Stephen, Jericho, and the list goes on).
Besides, the title is not a status. You're usually chosen by the Vishanti or the former SS leaves the mantle to you. You inherit a great power which is often depicted as a burden (Clea herself using this exact word to describe what it feels like to be a Sorcerer Supreme of two different realms).
It is true that being the Sorcerer Supreme doesn't mean you're the most powerful magic wielder of your realm. It means that you're wise enough to use magic in a clever way. And this is what Stephen usually does, SS or not.
Still, Wong being overshadowed by Stephen's protagonism does bother me. They could use Wong as someone equal to Stephen when it comes to resilience if they wanted to make him the Sorcerer Supreme (something similar to Ant-Man and the Wasp, where they share the deeds of their heroism).
But then again, magic has never been properly depicted in the MCU, so it doesn't surprise me that they still fail to portray its dynamics (*laughs in Asgardian magic*).