I wouldn’t call golf low impact. If you walk 18 it’s 5 or 6 miles with 25lbs on your back. Many pros tend to blow up their back and require surgery in their early 30s. Even amateurs can suffer from back or hand issues. It may not be intense cardio like rowing but the body is certainly being used towards its limits along some vectors and being put at risk for injury. Swinging a weighted metal rod at 100+ mph sometimes with all that force going right back from the ground you chunked into your wrists and spine.

It’s lower impact than most other sports (excluding sports like darts or bowls, of course).

There’s a reason that (i) professional golfers have a longer career than most other professional sports and (ii) many sports people transition to golf later in their career and (iii) there is a high preponderance of older players in golf.