I also experienced pushback when I shared a similar skill with some of my colleagues (and it didn't mention "vibe" in the name). The main objection was "I am doing careful planning upfront, so I have the same level of understanding of the code as before".
Maybe they do. In my experience, the agent was going over the scenarios that I failed to consider during the planning stage, and it was net positive. I haven't tried it with a spec-driven approach.