It is absolutely an issue. And a big reason for the state of this program. Not THE reason, but a big reason. I was a season ticket holder at age 23, and I would regularly bring new, non-BU affiliated people to games, they would remark how weird our atmosphere was - that you were expected to stand at certain times that were unknown to everyone, and got judged if you didn't. But after a big play or when we needed a big defensive stop blue hairs would yell at you to sit down. Many BU fans act as if the young fans haven't 'earned' the right to like BU as much as them because they didn't know Joe Stowell, or remember the early day of DV, and they haven't been there since the Robertson Fieldhouse. (There are many, many exceptions to this rule, and I can tell a great story about a couple f influential posters here making BU fans that they probably never knew, but I digress).
Between the way my guests were treated, the declining product on the floor, and the increase in ticket prices, I moved my seats back, and then dropped them as I began to travel extensively for work and am pursuing my masters.
BU has great fans, and will continue to, but they have to be more accepting and welcoming of newcomers, particularly of 20-something young professionals - people who are respectful, enjoy sports, will eventually have families in the Peoria Area and, quite frankly, have cash . As I approach 30, I have largely given up trying to turn my friends in to BU fans due to all of the current issues. But if the program turns around, and if the fans come back, they'll need to bring in a new wave of Red-and-White, and if we maintain the status quo, I'm not sure where those will come from.