Knowing the original poster, the question is not "fishing for responses that support the p.o.v. that things were better in the good old day..." Not every question is designed to trap one into agreeing with them... assuming so could be naive.
To me- based on prior dialogue with the poster- the poster feels that there was more audience response during the shows. As a marching member, it does seem that audiences in the past were more willing to show there excitement during the show, rather than combusting in the final seconds of the show. Personally I feel that the "rules" of the crowd are different now, as it seems like many find it rude to show some emotion during the show-not just after a selection or at the conclusion, but whenever. During the summer I occasionally see on Facebook posts by The Cadets, Crown, and other groups asking "Who's going to be at the show tonight? If you hear or see something you like, make some noise!" I feel that the lack of audience reaction during the show isnot because horn lines aren't as loud (they are loud) or there is no musical content (there is definitely something called "music" there) compared to the "old glory days" of drum corps, but because the unspoken rule of the crowd is keep quite until the end.
Yes there are instances of the crowd going nuts-Look on the first page for examples.