You can’t really blame the Russians. The UK or the US would have done just the same. Imagine you the US are fighting a war in the US and some third party has a drone just off the coast of Norfolk but in international airspace providing intelligence to the enemy. The US would also take it down. It’s the cost of doing business.
What a strange assumption, troll farm style. When did the US or UK ever "take one down"? Russia does flights like that all the time off the UK coast and elsewhere, however manned ones.