[zowie_vd]

Large cloud providers are actually exactly the ones who argued that leap seconds should be abolished, so I presume there were enough use cases where this was an issue. I faintly remember one article about the announcement of the voting results where they talked about the issues that smearing could cause but I don't remember exactly what it was, or where I read it.

[sllabres]

Voting running after midnight local time (where leap seconds get inserted) and dependent on sub-seconds, with only five leap seconds since 2000 introduced reads like a really interesting case.