One team in FF, two more in Elite Eight, and another in Sweet 16 last year somehow showed the league wasn't great? Pretty much every team made it as far, or further than, expected according to seeding.
As for this season, let's assume for the sake of argument that it isn't as strong as some past years. If it is still one of the best in the country, it still stands to reason that it deserves a lot of bids. Which leagues are better top to bottom? A couple might have more elite teams, but those leagues also have far more awful teams at the bottom. The league's performance in November and December is why it is ranked so highly. Those results have to mean something, notwithstanding subjective opinions that "so and so" sucks.