Most of what you're saying is talking around the point I was making.
I should have made it clearer that the 3 series I mentioned are not just any random series that took place this season, but are the Braves 3 most recent series other than the two Brewers series. So, it isn't like the Brewers are catching the Braves when they are exceptionally hot.
The historical summary of teams winning the World Series has nothing to do with my comment about what the Brewers (even with a few roster changes) would face if they played the Braves in a 7 game series. I never said that underdogs can’t win short series, and don’t need to be reminded that they do win them. . I don't think anyone has said anything that suggests that they think the Brewers would be anything other than heavy underdogs if they faced the Braves in a 7 game series, and probably wouldn't win.
My point never was that the Braves are inevitably going to win the World Series. When the favorites to win the series have probabilities of winning in the 15-20% range, it should be expected that the top favorite, or even one of the top 2 favorites will not win half the time or more. And, occasionally a team farther back in the field will get hot and win. If it comes down to the favorite to win the World Series vs "The Field", a record of 3-4 is actually pretty high.