This poll was originally shared in !asklemmy@lemmy.ml then in !voyagerapp@lemmy.world. Given how one of them is one of the 3 largest communities on the Lemmy network and the other is a community for another app, I would say those communities probably aren't biased. There wasn't even a link to the poll on this post until seven hours after this post was created, which was after most of the engagement with this post.
Maybe the percentage is high because it's a good app a lot of people use