The skip option had a long history from VPT and is used to skip a section

[10: skip=True]

It was supposed to be used for

1. Quickly comment on a step but renaming the step would have the same effect.
2. Enable certain steps depending on the complexity of the workflow (e.g. sos run --quality-control true) but we already have many ways to do the same (e.g. subworkflow).

I have never used it for any production code and do not see a good usage for it.