I like pockets of scrub and trees, we actively encourage it.
My view is, we are sharing the land with animals and nature, they love these little pockets. I am sure the birds, insects, rabbits, hares, deer love the land we share with them. They are safe too.
What I am not so keen on is where committees have planted every space with lines of trees so the holes start to look to similar.
Beauty is in the eye of the beholder, Silver Birch are 10/10 for me, but like all things you need variety so a golf course with a solitary specie would not be so good for me.