If there was an exceptional circumstance he wouldn't have started the season to begin with. Or he would have explained it when he opted out after 5 games. Like Buster Posey did, who adopted twins that were born two months premature just before the season was to restart.
And David Price felt so bad about opting out that he told the Dodgers not give him a World Series ring. Andrew Friedman insisted that he get one anyway and Price auctioned it off for charity because he didn't think he deserved it. I respect that.
Also, "a lot" of major leaguers did not opt out. The total list was 25 out of over 1,000 players. Hardly "a lot."
It totally boggles my mind that people on this board don't understand that team leaders don't quit during the season.*
*without a really good ****** reason