Looks like it's not a false flag as Zelensky told Russia the war is coming to them in a statement today.
https://www.barrons.com/news/zelensky-says-war-coming-to-russia-after-moscow-drone-attack-2895a4ea
Ukrainian President Volodymyr Zelensky warned on Sunday that "war" was coming to Russia after three Ukrainian drones were downed over Moscow.
"Gradually, the war is returning to the territory of Russia -- to its symbolic centres and military bases, and this is an inevitable, natural and absolutely fair process," Zelensky said on a visit to the western city of Ivano-Frankivsk.
"Ukraine is getting stronger," he added, warning however that the country should prepare for new attack on energy infrastructure in winter.