The community owner can determine the type of post voting they prefer for their comments or community, including opting for no voting at all. To find the settings for voting options, go to the edit project page, click on “More”, then select “Edit Comments” (or “Edit Community”).
As for the default option of Up/Down voting, most posts are not voted on. However, when a standout post is shared, we often see viewers expressing their opinion through a significant number of upvotes or downvotes. It’s an effective way for viewers to gauge how others feel about a specific post without having to come in and write a comment themselves. Without a way for community members to give feedback on a post, every post may be viewed with equal weight, which may give a misleading impression to a reader.
Currently, the up/down vote score does not influence the display order of comments. They appear chronologically for now, although we might consider changing this in the future.