This file has modest number of edges and faces (~11,000 edges). Only two built in materials used (Mirror 01 and Steel brushed stainless. Former hidden image deleted, and everything Purged. It’s the top part of a street lamp from the mid 20th century.
Here’s a link to the file (33MB approx)
All tags turned on (there’s only one aside from Untagged). Nothing extra shows when I View/Hidden Objects, or View/Hidden geometry, and Zoom Extents, except softened or hidden lines in the visible components.
I have a very different file with over 500,000 edges, file size less than 3MB.
What’s bloating this file that I haven’t been able to spot?