Ideally you would have a low RPO and RTO for all your backups, but reducing these values often involves increasing the cost of the backups so it is important to find the values which work for you.
The total of both RPO and RTO is a measure of the lost productivity (if you lose a day’s data, and it takes you a further day to get back up and running, you have lost 2 days work in total). In some cases you may be able to tolerate being unable to work as long as you don’t lose any data (i.e. a low RPO is most important). For other organisations getting back up and running quickly is the priority, even if data is lost (i.e. a low RTO is most important).
The reality is that you likely have different priorities for different systems across your organisation, which is why it is essential your backups are configured to meet your business needs.