Golf is a slowly dying sport and I think you can at least make a case for hybrid uses of those areas with both some golf and the continuation of the trail systems.
Good podcast on this
Listen to “A good walk spoiled” Season 2 Episode 1 of The Revisionist History Podcast with Malcolm Gladwell.
He talks about Toronto Golf courses.
The city owned ones youre actually allowed to bike through to continue on the trails. But golfers will yell at you and you might get hit by a ball, who wants that. Its less than ideal.