From Luke Smith's post on GDP: https://lukesmith.xyz/articles/why-its-bad-to-have-high-gdp/ "GDP is only a measurement of how reliant a place or country is on the global economy. Self-sufficiency has a GDP of 0. Wasteful consooomerism has an extremely large GDP."
To use Luke's example, say buzzsaws introduce planned obsolescence. People buy more saws for no good reason, which is "good for the GDP." More fixed income goes to buzzsaws instead of eventually being spent on something more useful. The buzzsaw industry expands a bit, pulling people and resources from other endeavors. Society is collectively spending its effort producing then throwing away buzzsaws when it could have created future growth through technology etc, which the GDP would eventually measure.