On my DLT pipeline,

• I Installed the Databricks-mosaic library
• Photon is activated
• I'm using a workspace premium tier

SELECT
    id,
    city_name,
    st_point(latitude, longitude) AS city_point
  FROM city_data
  ;

st_point is disabled or unsupported. Consider enabling Photon or switch to a tier that supports ST expressions.

I understand well, to use GIS functions  on ETL Pipeline we must have the Enterprise tier ?