Oh, I would agree with you that he cut golf down, especially in 2013 after the back surgeries to get healthy. He also stopped playing competitively soccer and basketball int he off-season.
Those statements seem to be more as hard-core participation, not for fun. The references they even give in the article you provided speak about playing golf on a tournament level. That is why I provided a link to article which is from 2015, a year later than the article you provided, which explains that Spieth, who is as professional as it gets, and Romo still play once in awhile for fun.
So he has been playing golf for at least two years now, just not competitively and not often. He was basically a amateur golfer that was competing in the off-season.
And now he's back in a tournament as well, meaning he doesn't see it as an issue to his back.