I’d argue that 100 houses and 1 playground is much more destructive to the land than 1 building with 100 apartments and no playground. Single family homes still have a massive amount of impervious ground cover ranging from their roofs, driveways and patios.
Its also not an inherrent problem to the denser developments themselves but moreso an issue its legal to pay a fine to get out of a building standard. The city could just refuse any development that fails to meet their public park and tree goals.