That easy, huh? No it's really not if you are using a free browser extension as a viewer. I also tried loading figpea, which recognizes the layers but doesnt seem to want to display them.
What would be easy, however, is for content creators to skip this kind of stuff. I just want to print what I need to run the game. Spreads with both version would be cheap, easy, and fast. What's not to like. I definitely don't like layers though, and can honestly say that I have never seen them used in any other itch or drive thru rpg product in my life. Very frustrated.