Unfortunately, they're not allowed to do that.
Oh, how I wish I was making that up, but I'm not. The FL's (Fucking Lawyers) literally will not let the litverse deal with the destruction of Romulus or anything derived from that, because that event happened in an Abrams film, and that's off limits to all novel writers.
And if you're wondering how the litverse is ever supposed to mention Romulus, or any Romulan for that matter, WITHOUT mentioning the fact that Romulus is now a giant cloud of space dust...you're in the same boat as the rest of us. God, you gotta love the Fucking Lawyers, don't ya?
(yes, yes, yes, I am VERY much aware that novel writers don't have to hit 2387 for awhile now and can still tell stories set before that time. But they can't keep that up forever. Sooner or later they will have to move on past that date. Hopefully by that time, the Fucking Lawyers will have reconsidered their stance.)