1 - You purchased tickets from FR which do not offer a hub service and I think you would of been refused entry to connections in T1 as FR do not offer transfers. Most transit is via T2 at DUB and T1 only early morning for certain carriers and no point in wasting money keeping it open when the airline doesn't to pay for it.
2 - The Hub is no responsible for airline punctuality.
Had you fly with Aer Lings they would of accepted you via the connections route once it's not after the last wave of T/A traffic connections.
I missed a connection from CDG to CFN under basically the same circumstances. Baggage was checked all the way through but missed the flight due to a combination of a late arriving aircraft and having to go through passport control, into the checkin area and back through security rather than staying airside the entire time
So you didn't leave enough time or check on the rules about connecting at DUB?