Yes to all points mentioned above. This is my first bike with a center stand. I struggle a bit too, and I'm 6'0" and 180 lbs - should be easy. It doesn't help that I also worry about dropping it on the right side while lifting it, because there's nothing to catch it if it starts to go over.
I learned the hard way that the weight of full panniers of tools/camping gear/clothes and food, make it way harder than it needs to be. Also, the panniers just get in the way. Although mentioned, I think the surface is an overlooked point. If there is even the slightest downhill and especially if there is a raised area under the stand, it will be exponentially more difficult. #physics