Burstable instances are designed to offer flexibility by allowing instances to exceed their baseline CPU performance temporarily when workloads require additional CPU resources. Statements that are not correct are the ones suggesting cost and usage misalignment: Firstly, burstable instances cost less than regular instances with the same total OCPU count is incorrect because the cost structure depends on the actual usage of burstable instances and may not always result in lower costs. Secondly, burstable instances are designed for scenarios where an instance is not typically idle and has high CPU utilization is incorrect because burstable instances are optimal for workloads that are generally low in utilization but occasionally need to burst to higher CPU performance. High consistent CPU utilization does not align with the primary use case of burstable instances.