I would imagine at least 2/3rds of the individual investors who voted were sensible enough to vote against the reverse split (I wish I could say the same about voting against the board of directors), and not voting counts as a no vote.
>Can we assume enough votes have been cast to approve the reverse split?<
With non-votes counting as No votes, I don’t think approval can be assumed. Moreover, shareholders have until midnight Monday (or the annual meeting itself if they attend) to vote or change a prior vote.