Without a connection to God you might view M Doll as a cool quirky Tim Burton esque fantasy romp. However those with eyes to see can see the very in your face connections to Satan's influence on this world. Let me share my theories.
The clown presented is very creepy and almost sinister at the beginning, we see his true form as the Lightbringer towards the end of the film. Though the hints are there throughout such as the clown having a halo representing an angel of the fallen variety. You see him appearing on the phones of the masses influencing the people of this world. Through the viewport of these phones the people can't see the fallen destruction world around them and ignore the blatant horror inflicted upon other people. The only time they notice these things is through the camera viewport of their phones. If there was audio in this film you would expect them to be yelling "WORLDSTAR" while filming people getting the shit kicked out of them. Watch videos of the Astroworld concert recently where people are having seizures dying on the ground while the concert still goes on with satanic imagery appearing on the screens behind them.
The phones are a very literal and symbolic way of showing the demonic possession of most of the Godless masses on this realm. Low levels of influence appear as just babies with cigarettes, while in our real realm this would be the modern day adult. As the demonic possession increases you see changes in the characters appearance in the forms of the antennas that grow out of their heads. This starts as helmet, then full on antennas, and then the final demonic form where you have completely sold your soul with an inverted cross on the forehead. Similar to the modern day rapper, just a coincidence like that as well most likely.
M Doll is about what it's like to have to go through this realms test of being in a fallen world completely overrun by satanic influences. The one friend the M Doll has on his journey that actually pays attention to him, ends up being just another gay robot like the rest who's only contribution is doing a dance and throwing up from too much alcohol. M Doll does something interesting that I don't see any much media that tackles similar issues. There's no grand awakening for the masses, even though the ice cream that is used as a weapon to defeat Satan at the end of the film represents the artworks used to find light in this dark world. However only those with eyes to see can get the truths from these artworks, as there is no hope for the masses who can't break away from their mind control devices.