So you have an omnicompetent character that gets inserted into the backstory of a famous canon character to serve as your protagonist. That's not a great starting point.
Discovery then continues to nosedive in quality by revolving the plot around a super secret, much better form of FTL travel called the Spore Drive. In a prequel. Making a show a prequel is already both limiting and creatively bankrupt because most of the time it just gets used to retread old plotlines but with the frame of "that thing you remember, BUT FOR THE FIRST TIME!" conceits. Discovery gets around the limitations of being a prequel by basically just ignoring canon and the fact that its a prequel. It doesn't even really try to pretend that this is a universe that is going to some day become the Star Trek you know until the second season, and at that point its a clumsy rush job to please the fans.
It doesn't even look like Star Trek. Did you know that Klingons were scaley space potatoes that flew around in giant mosques? Thats what Klingons are, right? And Starfleet dresses like the cast of Batllestar Galactica, thats the scifi franchise this is a prequel to, right? You know, one of those scifi franchises that's all about people backstabbing and shooting each other, not science and optimism. Thats the Star Trek you remember, right?
Its just one thing after another. And one of these points, on its own, would have been a weakness that maybe gets glossed over by the rest of the show, but add it all up and you end up with a prequel that doesn't play by the rules of the franchise it is inserting itself into, which doesn't fit that setting in tone, concept, or even the bare minimum of appearance.
If this had been a prequel to Mass Effect instead, it would be a much better fit all around. And at least we would have had an excuse for the video game protagonist syndrome.