For me...the rise of a billion devops tools with their own opinionated designs and syntax.
I'm convinced that some of the complexity is by design, or at least left around for the purposes of selling certificates and trainings. For example there's basically no reason why Terraform has to be its own language, the declarative engine can be wrapped around any other one. It's much more profitable if your tool is a "skill" to build an industry around than if it is just something that people use, easily understand, and can be done with.
Who are the customers? Are they already experts who know what they're doing and can leap over any barriers to entry in a single bound? Such a person might invite a hard-to-use technology becoming popular as it gives them more leverage when negotiating rates.
