Yes, it is. However, this is not a complaint but a question that I, as a potential customer, have. I don't care that it can be reversed generally. I only care about how they plan to protect me as their client. It is a direct and fair question to ask from such platform.
Most of these platforms use a third party payment gateway which stores your banking information and are generally compliant with Govt's guidelines for storing sensitive information and have safe measures in place for breaches.