They’re really fucking bad lol
Honestly the fault is on Riot for thinking they understand what casting is at this point. People are looking for genuine insight and tone variation in delivery. I've watched some of these people go from nobodies to casters and it's the same format. Have examples of your work, find the hiring manager for these jobs for the Company on twitter, follow them and then like and comment on all their posts. This builds your visibility and then you hit up a tier 2 tournament organizer and plead your case. It's about focus. You're either focusing on your craft to become a better caster or your more interested in the actual theory of the game. The people who want the latter usually end up trying to coach or fall off the face of the earth.