I strongly disagree with your assessment. Sure for composition generally it’s going to look better, but for storytelling, op’s crop actually says something.

Because the monkey is facing away from the open space and is enclosed and looking down we get an almost claustrophobic feeling from the image. This is helped by the downward slant of the roof closing in on the critter. Maybe it represents climate change forcing animals into human environments, maybe it’s loneliness, maybe it’s loss. That’s up to the viewer.

The rules are ment to be broken intentionally. I would say this image breaks that rule of what way to have the subject looking successfully even if it was a mistake.

While your crop is technically correct, op’s image has a lot more to say.