"One thing I really don’t like about the general direction of “indie” games is that they seem more concerned with aesthetics. It’s often aesthetic progressivism mixed with design orthodoxy. A beautiful hand-drawn art style for a puzzle platformer less complicated than Mario."
This cultural stagnation is also pretty clear across pretty much the whole landscape from fashion to games. We're looping through the same few decades of nostalgia creating more of the same with small variations. IMO it's just a result of the commodification of creativity.