48-0 in youth football is different than 25-0 in youth volleyball for 3 straight games. It can also be very different than 8-0 in soccer or 15+ -0 in baseball & softball. I've been on both sides of games like this at the youth level in baseball, soccer, and football. In football If they subbed very quickly, let's say 28-0, and it's the 1st half, it is what it is..... not much you can do about it if the other team's subs are still scoring. If they didn't sub, I have a huge problem. When I coach youth football, I have a constant rotation with ALL my players, even in close games, and even championship games. I'm all about development over winning at all levels except varsity high school. When I'm coaching youth football, if I go up 3 scores, I sub out everyone.....now I usually don't have enough for 2 whole "strings." If my subs are moving the ball easily and score again, I start having my unathletic linemen run the ball. I'm not trying to embarrass anyone. And those linemen love the opportunity to run the ball, and they gain a whole 1-2 yards maybe. If my backup defense is still tearing them up, I move my skill guys to the line, and my linemen to the skill positions. Again, there is no need to embarrass the other team.
The one year I helped with soccer, I did the same thing.... If we went up 3-4 quick, subs right away. I start moving offensive guys to defense so I don't pile it on..
Now, baseball is different, but again, I'm not trying to embarrass the other team. My 10 year old had a couple of games this year where our boys were just hitting the crap out of the ball. We went through our batting order 2x in the first inning. Unfortunately we were in a new league and there was not maximum number of batters per inning. I felt terrible. But, after we scored 7 quick runs (We were up 3-0 when a kid that typically struggles at the plate hit a 1 in a million grand slam), I stopped every single batter at first base, no matter how far they hit it. Period. Bottom of the inning, the other team went down 1, 2, 3. My son's team again was hitting like crazy, everyone got a single. We stopped that half of the inning after we batted everyone. There were 0 outs. The other team went down in order again. I told the other coach to let his entire team bat. The coach, the parents, and players all greatly appreciated it. I brought in a kid who had never pitched to pitch to them, and they got a couple of hits. The game was over after 2 innings by the league's run rule. I felt terrible, but you can't tell your players to not swing the bat. But you can do things to slow down or stop the bleeding (hopefully).
Again, there's a way to win with class, with 8 minute quarters, I have really, really difficult time believing 48-0 wasn't intentionally trying to "send a statement" in some way. With the 40 second play clock, each team gets around 25 plays for an entire game. So for the score to be 48-0 after 3 quarters, you are talking about maybe 20 plays. To score 6 or more TDs in that short of time frame is really, really difficult to do unintentionally.
Win with class people, it's youth sports. #1 goal should be teaching sportsmanship. Not being a A-hole.