I'm really not sure about the part where an adult monster calls for its young to be sacrificed and they just obey and present their bellies.
Besides that, it's a pretty important lesson that killing is part of the cycle of life.
@jackslate
I like how tasty animals are so my diet is omnivorous.
Overpopulation is an issue. Just look at humans; our rising population has created a lot of needs and pollution and it's been a pretty big issue for a number of animals and plants as many have gone instincts and we're still on the process of deforesting larges parts of the planet. We've been consuming the planet's resources in an unsustainable way for many years.
The simplest solution is war (which you could say is the equivalent to hunting but for humans). Population decrease is a surefire way of resolving the issue (covid-19 pandemic has been pretty good for the planet in terms of the Earth overshoot day). China has also curbed its population growth through policies to limit birth.
Don't try to achieve balance like Thanos though; he did not think things through and he was apparently completely oblivious to the fact that humans reproduce and their population will increase again in time, among many other issues with his plan of action.