I think it could be that rather than worshiping complexity some people find it hard to value or respect simple things, and that that leads them on a path to "accidental" complexity. Like when someone find out that a rainbow is just water refracting light, or the sun is just a big ball of gas... that it takes some of the coolness out of it. There could be a tendency like that to find simple systems disappointing.

Or it could just be that people have a certain mental budget for maximum complexity, and they'll try and make sure they spend it all in the belief that it will cover more uses.

Or it could be that complex systems tend to stick around because they are far more immune to random management changes because everyone goes "oooh, we'd better not touch that". Simple systems might becomes the victim of their own ease and get subsumed by a more complex monster.