-unBrogue's updates shadow Brogue's updates on a delayed basis over on ASCII Dreams as the project that seems to have summoned him away from unAngband indefinitely---I understand them to be well received by the Brogue folks in general and the next update or so is supposed to be rather substantial to reclaim pace with Brogue proper.
But if it came down to focus, Brogue is certainly moreso in the spotlight.
-With the old sites long gone, there's no community for Tome 2.3.5 beyond folks scattered about and the one-some people trying to remake it in T-Engine 4 slowly these past several months. Sort of like how there's almost certainly more nLarn players than Larn ones---but without fresh dev activity it shrivels.