Lol I have noticed whatever these epohhs are -they hit you hard
The D'Deridex it not old -They have that Rom ship from the 2150s in the game thats OLD
I actually have NO problem with that whatsoever in the context of the storyline.
Disregarding the fact that this could be another Starfleet-esq 'modern ship that simply uses an older, established, design (a'la NX class), UNLIKE that scenario, there is justification for the Romulan refugees using old ships.
I mean, they're refugees who lost their homeworld and all the resources it afforded - it actually makes a lot of sense that they'd be using pretty much any spaceworthy ships they could get their hands on, regardless of age.