The pic you posted is showing the HDRP shaders which use more keywords than built-in shaders but also were not present at all in previous versions of CTS. It is a bit strange though that those keywords count towards your limit if they are not used in your project at all. I've taken a note to review this for a future update. The problem is we have done such a thing with the water shaders in Gaia and we had support cases where people could not find the shaders for the other pipelines because they were supplied as .txt files that you needed to rename to .shader to activate them. We hope that with the fututre development of the SRPs there will be some kind of event that we can hook in when the user switches pipelines, then we could make such switches automatically.