Additionally, at least in small-medium sized teams, I've seen teams become over reliant on the small number of people who prioritize and respond quickly to code

Additionally, at least in small-medium sized teams, I've seen teams become over reliant on the small number of people who prioritize and respond quickly to code review requests. A benefit of not prioritizing code review as an individual is that it can naturally spread the review responsibility, and understanding of the code, more broadly.