The Red Sox didn't "throw" the World Series, it was the Cubs, MAYBE, who did. It is the Cubs, MAYBE, who are tainted. Not the Red Sox.
Some people like to mimic the media. ESPN has a NY bias (their main market), and never misses an opportunity to dig at the Red Sox.
You could say every World Series the Yankees won in the 1920s was tainted. Because they won them with key players (more than just the Babe) bought from the Red Sox championship teams a few years before--to turn a losing American League NY team around. By just changing uniforms.You won't hear that on ESPN.