Presumably you read the summaries to find promising papers where you will read the abstract (which you then follow up by reading the figures, conclusion, discus

Presumably you read the summaries to find promising papers where you will read the abstract (which you then follow up by reading the figures, conclusion, discussion, introduction, then the rest, bailing out once you think this isn't a paper you want to read further). If at any point you figure out the "community abstract" was misleading you can come back and downvote it. The only issue is if community abstracts get published that make good papers unappealing to read, or if the majority of votes come from people who don't actually engage with the paper