This glitch art gif is being used as an expression of how the human brain comprehends and interprets companionship. Relationships are not something that just so happen. They are a creation of our own minds, used as a means to hide how alone people truly are. People don’t want to be a single being, so they will surround themselves with others of the same kind, generating their sort of symbiotic relationship between them.
The expression of humans creating their own companions is shown through the appearance of a second man in the glitch, how connections with other human beings are generated, and will eventually fade away.
The incorporation of 5 7 5 is within the number of frames. The fives being the fade in and out, or the tween, and the 7 being the frames in the glitch itself.