Currently, any proposal given in this new feedback system can be upvoted by residents who agree with the proposal. In some cases however, the proposal might be biased towards the individual making the proposal, and fails to consider wider consequences of said proposal. Furthermore, it it sometimes obvious that some proposals are clearly either not workable, or would have negative impacts that outweigh any positive benefit.
For these reasons, residents should also have the option to downvote any proposal they dont like. Just using the comments alone to express disapproval does not give any visual clues as to the true popularity of a proposal.