I totally missed the point where icopress said the voting system is based on the IRV.
Using this system is totally fine, yet it should be clear to everyone, and based on an “official” statement by contest organiser(s), rather than speculation.
Hover over "voting" and you will see instant-runoff being mentioned. But yeah, maybe it could have been actually mentioned and not kinda hidden.
For the
voting system to work, any nominated pizza must have the support of at least three users.