I used to list every single thing I ever used on my list of skills when I first started looking for a job since I didn't really know what I wanted to do so I thought I'd be safe and list everything. Since then however I've gotten a very clear picture of what kind of jobs I want and started to remove things that would likely lead to a flood of calls from recruiters about jobs that I'm not at all interested in.

But I still see the raw list of skills as nothing more than SEO optimization for keyword searches on job sites. I'd expect any competent hiring manager to skip right past that and focus on the specific details that I mention for each of my past positions.