No. The problem is overall resource consumption. Which is a product: people * consumption/person. Since consumption per person has a lower limit, there has to be an upper limit for the sustainable number of people on the planet. Since standard of living should be at least equal to that of your ancestors, resource consumption per person will also be above the bare necessary minimum. And since the normal mode of population growth is exponential, any change in consumption per person is meaningless anyways, the overall resource consumption would be exponential nonetheless. So yes, we are always on the verge of overpopulation, followed by catastrophic collapse. We only avoided collapse in the past because technology (industrialization, green revolution) enabled exponential growth in resource production. But that might be a one-time thing.
Wrong. Pollution per person is extremely unequal across the world. There's a significant fraction of human population living in a completely sustainable manner and another fraction that is destroying life on earth.
Don't try to blame the first group for the sins of the second.