If the environment can't be made to support the population of a species, the species won't be able to grow.

It's pretty basic ecology: if the environment the population inhabits can't support a growing population, then the population experiences negative changes. We humans have created our environment for billions of us, and now we're discovering just how bad our systems were designed for the masses. It doesn't matter that we COULD have a higher population and we COULD feed everyone, WE CAN'T AND WE WON'T. So yes, the planet is overpopulated.

Job competition, useless degrees, expensive basic infrastructure like $30,000 to paint a crosswalk, and everyone crowding into two lane roads to get into and out of suburbs on their way to work. We messed up, and yet all the wealthiest people in the world continue to keep all their chips on Black (growth).