> You're implying that technology won't be able to increase productivity

https://en.wikipedia.org/wiki/Secular_stagnation_theory

A component of which is the observation that real production growth has been essentially zero since the 1980s. So clearly you can have technological advances without any productivity growth.

> Human population grows exponentially, earth has finite resources. Constant population growth is suicidal.

Not nearly as suicidal as population decline, obviously.

More nuanced, there are plenty of species, and races within species, that refuse to have their population grow. It doesn't end well.