https://www.dublinairport.com/flight-information/connections/self-connecting-passengers
I interpret this as the minimum connection time (MCT) was 60 minutes, but MCTs apply to single tickets, not self connections. MCTs are what airlines use when they are selling you a ticket with a connection.
You will notice in the FAQ above it states that “ Self connecting passengers are not permitted to use the Flight Connections Facility”. It is a bit misleading the way they have posted the FAQs on the self connecting passengers page. They have the same set of FAQs on the “Connections Guide” page.
When you are self-connecting, you need to allow more time. The amount of time depends on how much risk you want to take. You also need to allow time to go through immigration, retrieve and recheck your luggage (if applicable) and go through security. You need to be prepared to buy a new ticket if you miss the connection. Allow enough time so that you feel reasonably comfortable with the risk.