Carrying capacity is one thing. But I believe in ecological unleashing. Our industrial economy is based on scarcity. However, mother nature knows only abundance.
So if we are all aware people and practice care and responsibility, we can create with synergy and the carrying capacity will be bigger.
The notion of too many humans is in my opinion fabricated by the Western world to talk about the South. But please don’t forget that the West has a 20x bigger footprint than poor countries have.
And the meme of too many people is too often abused for horrible purposes… please be careful to go there…