Ukraine is well within their rights to attack strategic targets inside of Russia. They are at war. It might actually wake some of the Russian citizens up. Welcome to Putin's war.
Breaking the civilian population with brute force is rarely working. See the battle of Britain, the bombs in London or the carpet bombing over Germany. It only leads to people digging in and becoming determined. Yet, little assaults like the drone one to keep the war uncomfortably close and spread a lingering feeling of insecurity might work.
Yep, let them enjoy their own medicine. If they want war, let them taste war.
They already encouraged it by letting Putin and his pawns motivate propaganda, pro-war posters and pro-war ads everywhere and their own useful men dying. The prorogative about "but but I would get jailed", yes, and the other alternative is to let your husband die at war and kill innocent ukrainians ya? Sure, enjoy the flavor of your own medicine. And this was just a tiny bit.
Yeah, I can only remember what I read about how the attitudes of the men on the frontlines of the first world war changed after the leaders obligated a dehumanized view of each other following the first christmas truce. This very well could have the opposite effect.
My ADHD riddled mind literally just before I got here sent me down the Wikipedia rabbit hole of the history of bombers. There was this millennium fucking thing where over 1000 bombers bombed the shit out of the city of Cologne in like 1942. On Wikipedia it was stated that the expected demoralization of the public didn't happen but instead it increased solidarity between the public and the military.