Is this a normal amount of wrinkliness?

I recently purchased the Muji cool touch organic cotton skirt and I really love the style and shape, but I'm noticing that it's pretty wrinkle prone. I tried to iron it and give it another test run, but this is what happened to the back after maybe an hour of sitting, even though I tried to smooth it out before I sat. So I'm sure after a full day of wearing it, it would be worse.

I'm still thinking of keeping it because I otherwise really like it and the construction is good, but are there much better alternatives? Are decent natural material dresses/skirts not supposed to have this issue? This one has a crisp texture and pleats, which probably don't help.