One way or another it still relies on sustainability. You might argue it can be ignored until the population returns to previous numbers (I would say that's wrong due to the war and aging population) but it will still become a problem eventually.
A big part of what drives birth rates down is crowdedness, and an attitude that there really doesn't need to be that many more people. We have more people on the planet than at any previous time in history, and I hardly expect the above factors to stay the same throughout a long period of population change. It's moderate, it's nothing to worry about.
One way or another it still relies on sustainability. You might argue it can be ignored until the population returns to previous numbers (I would say that's wrong due to the war and aging population) but it will still become a problem eventually.
A big part of what drives birth rates down is crowdedness, and an attitude that there really doesn't need to be that many more people. We have more people on the planet than at any previous time in history, and I hardly expect the above factors to stay the same throughout a long period of population change. It's moderate, it's nothing to worry about.