I disagree. The Nazis targeted St. Paul’s Cathedral in London. Firefighters worked around the clock to keep it from being burnt down, and that strengthened the British resolve more than any speech by Churchill. Symbols are powerful things. Nothing symbolic about a drone factory, but plenty symbolic about hitting so far into the interior, and damaging Russia’s ability to wage war in plain logistical terms.
“Nothing symbolic about a drone factory”
The point of attacking the factory was to interrupt Russian drone production. A predictable side effect will be a drain on Russian anti-aircraft resources that will need to be moved to protect this plant and others like it.