If you're on a team that isn't currently having staffing issues, I don't think it's weird to want your next hire to be better than the median person on the team. "Raise the bar," etc. Asking harder leetcode questions seems like a bad way to achieve it, but I get the impulse. If the bar for member nine of the team is approximately "better than the bottom 4" then that 9th person in is likely to have at least one moment of "wait, how did you pass that interview?" at some point after they come on.
If you're on a team that isn't currently having staffing issues, I don't think it's weird to want your next hire to be better than the median person on the team. "Raise the bar," etc. Asking harder leetcode questions seems like a bad way to achieve it, but I get the impulse. If the bar for member nine of the team is approximately "better than the bottom 4" then that 9th person in is likely to have at least one moment of "wait, how did you pass that interview?" at some point after they come on.