Quantity itself is not an issue - it's great to have options. Incompatibility, segmentation and uncertainity about the future are issues, though. E.g. ksonnet and Forge are dying. Some say Helm isn't particularly healthy, too - is it just speculations or would it die in next year or two, leaving all those charts repos a dead code for archeologists?
Maybe that's just me, but modern DevOps feels like JavaScript world from a few years ago. Things are born in abundance, promise lots, and die before they're even v1.0.