Let me break this down for you in another way. Say you're an employee at a sandwich shop. Someone comes in and makes their order and asks for cheddar cheese. Later, when they eat it, they find that they don't like cheddar cheese. Of the people who find they don't like it, only a very small select few will decide to complain to the shop about this even though it wasn't their fault; that specific customer just didn't like it. Would it be right for the shop to stop providing this topping because some customers decided they didn't like it afterwards? Of course not. There are way more people who order cheddar cheese and like it. Either way, you're going to hope the customer knows what they want when they are making their order. Whether they like it later or not doesn't necessarily involve you. Instead of trying to regulate things based on the worst case scenario, consider that people looking to make this decision are doing it because they want to and it really has nothing to do with you whether they may regret it in the future or not.

Also, sorry if it isn't the best example. It just kind of made sense in my head.