I was checking Martin Coven’s DataChannel tutorial. He had a brilliant trick to explode polygons.
- Apply Chamfer modifier.
- Set Amount to 0.0

- Set Selection to All Edges

- Turn off Min. Angle

- Turn on Open in the Open Chamfer

That’s it!
Also, don’t forget the new Data Channel preset, Explode Element, which is added in 3dsMax 2024.2.