Actually there is some truth to this statement.
Israel is committing genocide by killing civilians in Gaza on a scale that will destroy the people of Gaza if not stopped.
Moscow's army is killing Ukrainian civilians – but not on a scale that endangers the survival of the Ukrainian people. That's a war crime, not genocide.
Moscow does try to commit genocide on Ukraine, by denying Ukrainian identity, banning the language, destroying cultural heritage, appropriating culture and history, abducting children and forcing Ukrainians to become Russians – not only Rusyaniy (citizens of the Russian Federation), but Ruskiy (ethnic Russians).