So, the trajectory changes because of the rotation on the ground.
It's actually not that much tho, because a golf ball is pretty small.
I think that we could ignore the rotation, but either way there also is air resistance in real life.
The whole idea of the physics I'm describing supposes that there is no air resistance.
Adding the air resistance to the analysis, we wouldn't have a constant velocity in the x-axis and also wouldn't have a constant acceleration when free falling in the y-axis (that also is not constant because the earth's gravity changes depending on the distance of the object).
I hope that I answered your question :)