The debate will rage over the details, but as far as I can see no one is debating that UKR managed to pull this off somehow. If they have indeed managed to launch from a UAV, that is more significant because of what else they could potentially do, and what Russia might do in retaliation.
Both sides are claiming the "defense of our soil" moral high ground, this is partly why so many Russian people remain loyal, the fear of western invasion by evil forces and the concept of fighting back with everything has been hard baked into them since at least the days of Napoleon. Given both sides have the "defending against the aggressor" mentality, it is hard to see how this ends without a lot more mess.