I said a while back that I was gonna change my name due to my obscene displeasure with the final season but... nah. I'm Stamets. I love my lil gay boy and I love his lil gay family and I love the ship with the weirdly long nacelles.
In the first season when she was a cadet, her character made sense. She was socially awkward, insecure, out of shape, etc. She's almost comedic relief from all the stressful situations the crew is in.
Fast forward to the future where she's a relatively high ranking officer... who's socially awkward, insecure, out of shape (yet somehow won a marathon or something?)... basically her character shows almost no growth, but somehow keeps getting promoted. Even the random ensigns who show up on the bridge are able to make a clear statement without saying "um, actually, I uh... think.... we should...".
It's like Jar Jar Binks was made a member of the bridge crew.