I think the golfing is getting a bad rap.
Obama played golf as a form of recreation. I don't recall ever hearing about him using it for business. And I recall reading a lot of complains, from both sides of the aisle, that he really didn't
attempt to schmooze with/get to know, members of Congress. For him, golf was just time away from his job.
Trump, like a lot of business types, seems to use golf as a way to break down barriers and work on deals. I always hated playing golf with clients as a way to schmooze business, but the truth is that it is a more effective technique than it may "deserve" to be. I didn't do it, but the guys who did made it productive. Yeah, they enjoyed it, but they developed client relationships as well.
I don't have a problem with Trump doing that as a way of trying to get things done.