I agree it is depressing, but I got used to it after a while. I am going backpacking for 10 days later this month and I had to build my own meals from scratch. There is not a single low-fodmap, vegan, gluten free meal company out there. Business idea?
Anyways, to answer your question I have not had any major issues with maple syrup when I am carb loading prior to a big ride. I have not thought about putting it into a beverage though. That is an interesting idea.