what if Handlebars by FloBots isn't about the darkness within human potential, but instead is about the inevitable trajectory of limitless growth

i don't suppose it can't be about both

From a perspective of subject, it's certainly about both, but from a perspective of making a statement about something, the two are more contrary to one another than you might think.

The goal of the former statement is to assert that humans have limitless potential and we should therefore be careful about how we continue to grow into the future.

The latter statement, instead asserts that the potential of humans for growth is limitless, and asserts that we should avoid growing beyond a certain point because any continued growth after that point has been reached will inevitably result in ruin, and perhaps even asserts that we've already passed that point.

The devil lies in the difference between "Limitless Potential" and "Potential for Limitless Growth". The former implies humans are capable of creating a perfect society, but need to be careful on the way there. The latter warns you that it's impossible, even if there isn't technically a limit to how far we can develop and push the envelope.