Interesting, Calista. Did they have a reason for their stance? I would have given you more of something else but, I can see that it would possibly create a discord with other members if they also wanted specialized boxes.
Most CSA work with a set amount of $$ for which you get a set amount of product, generally produce, at certain times. I would think that things would be different with each CSA, as each farm would be different.
How much & often did you get produce? Were there specified types being grown? Some offer a couple layers of buy, so you might get larger OR you might buy into another product -- fresh eggs, or fruit, for example. I suspect that some of the variances are from farmer experience, time in business, product available and such other things...... Just curious, not asking cost, only an idea of what was offered by this producer.

You are the first person I have ever heard say they were a member of a CSA, so interested in how it worked for you. OK, obviously you stopped due to Kale

but, otherwise, would you have continued? Personally, I would go to a market if a good one there...you buy, you choose.