CSS in carto: #point is not referenced

[calo1]

Right now, map interaction is working so I don't want to change anything ...

But the data_polygon layer used to have a sql query like this
SELECT ST_Centroid(points.the_geom_webmercator) , point.* FROM calo1.data_polygon as point

to create a layer called point at the centroid of the polygons.

Then part of the CSS looks like this:

#point{
   marker-fill-opacity: 0.9;
   marker-line-color: #FFFFFF;
   marker-line-width: 3.5;
   marker-line-opacity: 1;
   marker-placement: point;
   marker-type: ellipse;
   marker-width: 15.5;
   marker-allow-overlap: true;
  [zoom > 12]{marker-fill-opacity: 0;
  marker-line-width: 1}

}


#point{[zoom <=12][survey_session_desc="exisiting_ranch"]{ 
   marker-fill: #58faf4;
    }}
#point{[zoom <=12][survey_session_desc="site_visit"]{ 
   marker-fill: #ff0040;
    }}

This tells carto how to visualize the point layer. BUT as I said above .. there is no sql query to make point .. so I dont know how it is working at all. I'm hesitant to change it