Earlier quoted context omitted.
How is this outcome bad?
Under the buyback, long-term investors who have held on for the 16 years have lost nearly $2/sh. Under the dividend they would have made at least $18/sh. There's a positive feedback cycle: Companies show a disregard for long-term shareholders; large investors, seeing how they are being ignored, focus on short-term investments; Companies see that investors are interested in the short-term and don't play the long game.
with the buyback, those who sold shares reduced their percentage ownership of the company.
If they did not want to receive a larger percentage, then they could have sold a portion of their shares equal to the percentage being repurchased.
If they had done that, they would have received what would have been equal to the dividend.
In other words, there is no difference between a dividend and a buyback -- they both return money to the shareholders.