I positively value the attempt at isolating and condensing this specific group of alumni. It's a step towards increasing young alumni involvement.
However, if the goal is to develop active alumni for years to come, this is poor young alumni section placement. That section feels more like a continuation of the college years than a new beginning for the alumni years. During the sellout games this group would be sitting in a forest of 17-23 year olds. During the low attendance games this group would be sitting on an island.
Move all the alumni to one side, then segregate the groups. Placing young and old alumni on opposing sides almost psychologically pits the two groups against each other. That placement creates an unfavorable divide.
P.S.
What will it take to name section 104, section 1804? I think it's a no-cost, low effort change that adds a little spark to the game day experience.