This is no joke.
We have nuclear weapons. Should we ever acquire FTL travel we become a threat to the galaxy.
Imagine if there was a pack of dogs in a nearby forest that acquired bomb making capabilities. Then they stared travelling outside their forest.
What would any responsible organization do?
Look at mars for a clue.
One bomb to blow off the atmosphere. Later, another bomb to blow off the atmosphere that came out of solution from the soil and water after many years.
No atmosphere, no climate, no life. Problem solved.
Read Revelation; it’s all going to be nearly wiped out, then after the second coming, and after 1000 years, completely destroyed with a new Heaven and a new Earth.