Solarpunk

Seems to me that the down time as the groundskeepers work damages the reputation, and possibly the income, of the course.

That's not mentioning the cost to the course for that work.

In other words, it disrupts the golf course. That is exactly what a good protest does. If it doesn't interfere in some way, even if only by being annoying, it isn't a a useful protest at all.

While it isn't as disruptive as doing something like placing small amounts of explosives in the holes and then making craters out of the greens, that crosses into a protest that could injure someone, so there's a hard limit on how far you can go