I think the point is that before the events of the show, he was more calm and collected like Wesley, but very depressed like he tells Vanessa. Vanessa and Daredevil have caused him all this emotional turmoil and that's why he's acting this way. Notice how none of the other gang members were worried about his ability…

I blame the writers more for that, I think Rickards sells it well enough. The writers just keep giving her the exact same emotional beats.