Not to get too meta but the entire point of the Magicians and its allusions to Narnia was to critique the kind of privileged, entitled, bored-rich-kids aspect of the Great White Male Saviour Myths these kinds of children fantasies embodied and Quentin was at the centre of that for a reason. And frankly this season had none of that other than a really ham-fisted monologue from Penny where they spelt out some that theme in sky writing while not really doing any of it in the text.
There have been a couple of really big moments in this show that were thematically on point without needing to jam it down our throats. Quentin spending all of the first season thinking he's the Great White Saviour Chosen One on a quest to save Fillory and realising he wasn't special at all. Margo and Elliot cosplaying as Fillory's King and Queen like they were in a Saturday afternoon dress-up game until they realised these were actual people with lives and they started to act like real rulers. Julia's season 1 tantrum over not getting magic because she's Julia and Julia deserves it for being Julia only to have to deal with the horrific implications of that entitlement.
There's nothing in this season like that other than a vague "The Librarians think they have a right to police magic and they don't because Everett is corrupt" and also Penny will now explain why our critique of the white straight male protagonist issue will work fine if we get rid of him completely, even though without him there's nothing left to critique.
Nobody is going to watch this show in season 5 and think 'wow, there's no white male straight protagonist, that is so edgy". Especially since you just gave that guy the kind of heroic death that they get for being the white male hero - you know, the kind of narrative decision you're specifically supposed to be subverting?
You know what would have been edgy? Having an entire season devoted to that guy being a nurturing carer who supports his friends in their quests instead of having his own and then having him choose to date a guy.