I disagree with "flags fly forever" when it's applied to the argument of which team would you rather cheer for: the team that wins a title and is then terrible, or the team that is consistently good and always in the playoffs. I think it's a no brainer to prefer the team that is always exciting to watch vs the team that was exciting for one year in the last decade. Then, of course, there's everything in between, and I would prefer the team I follow to lean towards the sustainable model...which the Braves do almost as well as anyone.
Winning championships is the ultimate goal, and I would much rather watch every Braves player 155 times a year if it ended up with a title than watching them all play 162 games and fail to win a title. I want the team I follow to do everything in their power to increase their chances of winning, and I want them to do it without fail. I want my favorite team to always use the correct lineup, even if it only leads to 1 extra run a year. I want them to always make the correct pitching changes, even if it only leads to preventing 1 extra run per year. I want to get bench players some PAs so they can contribute in emergencies, and I want players rested so they play at 90% for 155 games rather than 80% for 162 games. I want every single optimal move to be made because when 10 optimal moves are always made the team wins an extra 1-2 games. The Rays have shown this as the model optimal franchise in sports.