It is not at all unusual to find names on ballot papers which are unknown, even if there are only three or four candidates. One generally finds a little about the candidate from leaflets or,failing that, one has to rely on party affiliation.
I assume that this is an AMS vote and many ofthe 'candidates' are not standing directly but are listed in the order in which they will be elected from the PR element.
I do not see how anyone is disenfranchised and, although the procedure may seem complex to those of us who do not have it, I suspect that a five year old could understand it. And the implication that AV is a fancy voting system is risible.