Don't agree (pardon the pun!) Looks to me that the voting thing is Frontier's way of finding out whether or not something is real before they investigate, so they don't waste resources on an imaginary bug
you can't vote up an issue unless it is confirmed as such, meaning they must have had investigated it already. you can, however, add more info or comments.
votes just help them gauge what is most demanded by the players, i dunno how they really use that criteria. severity should ideally always take priority, with estimated complexity maybe being a circumstantial factor. player votes should come last, if at all. actually, i don't think player votes is really a good metric for much and particularly not for setting priority of bug fixes in a game because, you know ... players! ...
imo it sends the wrong message, bugs are bugs. if a bug is severe it should enter the pipeline immediately, there is nothing to vote. if the pipeline chokes then that's a far bigger problem that an issuer tracker will not solve.