You could have easily copied the save file yourself to a cloud provider of your choice? Cloud is only a marketing word for "someone rented the cheapest (probably insecure) server somewhere and automatically puts sensitive customer-data on it without people getting told where in the world it actually ends up".
I think most people are rather careless with their data, the few people who are careful with it and told you about their concerns are not necessarily paranoid. You only need to read between the lines of some article about big data gained from apps, where it gets sold as the best thing since sliced bread, without a single word about privacy concerns. You may know you dont send something sensitive when having programmed an app, but people using an app can not know.